TWI741684B - Contact lens product - Google Patents

Abstract

A contact lens product includes a multifocal contact lens and a buffer solution, wherein the contact lens is immersed in the buffer solution. The multifocal contact lens includes a central region and at least one annular region. The annular region surrounds the central region. A diopter of the annular region is different from a diopter of the central region. The annular region closest to a periphery of the multifocal contact lens is a first annular region. When the specific condition is satisfied, the myopia can be prevented, or the progression of the myopia can be controlled.

Description

Contact lens products

The present invention relates to a contact lens product, and particularly relates to a contact lens product that can prevent myopia or control the progression of myopia.

According to the World Health Organization (WHO) data, the prevalence rate of myopia in countries around the world is between 8% and 62%. However, a survey in Taiwan found that the myopia rate of adolescents and children under the age of 18 is as high as 85%, and the incidence of myopia is significantly higher than that In other countries, the reason is probably due to the highly developed 3C electronic devices in recent years, which caused the young children’s eyes to receive improper irritation and excessive eye use. It will increase the degree of myopia at a certain rate. The study also pointed out that the lower the age of myopia, the higher the probability of developing high myopia (greater than or equal to 6.0 D) in the future, and high myopia patients are more likely to cause severe retinal detachment, glaucoma, etc. complication. Therefore, if it is possible to control and slow down myopia when it is detected that a child is suffering from pseudomyopia, it can effectively prevent the pseudomyopia from turning into myopia, thereby preventing the occurrence of high myopia.

The main cause of myopia is the variation of the optical structure of the eyeball. The formation of optical imaging is mainly affected by factors such as the cornea, lens and eyeball length of the eyeball. Normal eyes can correctly focus the image on the retina and get a clear image. In myopia patients, the image may focus on the retina due to excessive diopter of the cornea and lens (refractive myopia) or too long axis distance of the eye (axial myopia), resulting in blurry myopia symptoms. The myopia symptoms of young children can be divided into myopia and pseudomyopia. Myopia is a condition where the eyeball axis is too long and cannot be recovered by correction. However, if it is pseudomyopia, it is transient myopia caused by excessive force of the ciliary muscles. Symptoms are correctable myopia symptoms. There are many ways to correct children's pseudomyopia in clinic, mainly including orthokeratology and long-acting mydriatics, but the orthokeratology lens is easy to cause a high degree of external pressure and make the wearer feel uncomfortable. In general, long-acting mydriatics alone require a higher concentration of doses to be effective in correcting myopia, but it also relatively increases the probability of drug side effects.

One object of the present invention is to provide a contact lens product, which comprises a multifocal contact lens and a buffer solution, and the multifocal contact lens is immersed in the buffer solution. In this way, the multifocal contact lens can provide physical correction, which can effectively prevent myopia or control the progression of myopia, avoid wearing discomfort and reduce the probability of side effects of drugs.

According to the present invention, a contact lens product is provided, which comprises a multifocal contact lens and a buffer solution. The multifocal contact lens includes a central area and at least one annular area. The annular area surrounds the central area. The refractive power of the annular area is different from that of the central area. The annular area closest to the periphery of the multifocal contact lens is the first annular area. The buffer solution contains a cycloplegic agent, and the multifocal contact lens is immersed in the buffer solution. The composition of the multifocal contact lens contains UV absorbing components. The refractive power of the central zone of the multifocal contact lens is PowC, the maximum refractive power of the first annular zone of the multifocal contact lens is PowP1, and the diameter of the central zone of the multifocal contact lens is DiC, the weight percentage concentration of the cycloplegic agent in the buffer solution is ConA, which meets the following conditions: 2.25 D ≤ PowP1 – PowC; 4 mm ＜ DiC ≤ 9 mm; and 0.01% ＜ ConA ＜ 0.5%.

Please refer to Figure 1, which is a schematic diagram of a contact lens product 100 according to an embodiment of the present invention. The contact lens product 100 includes a multifocal contact lens 110 and a buffer solution 120. The multifocal contact lens 110 is immersed in the buffer solution 120. middle.

Please also refer to FIG. 2, which is a schematic plan view of the multifocal contact lens 110 in FIG. 1. The multifocal contact lens 110 includes a central area 111 and a first annular area 112. The first annular area 112 concentrically surrounds the central area 111. The refractive power of the first annular area 112 is different from the refractive power of the central area 111. The multifocal function of the multifocal contact lens 110 enables the surrounding images to focus on the front of the retina, thereby effectively slowing down the increase in the wheelbase of the eyeball and avoiding the deterioration of myopia. According to an embodiment of the present invention, the refractive power of the central area 111 is fixed.

At least one of the central area 111 and the first annular area 112 of the multifocal contact lens 110 is aspherical, thereby facilitating the design of the first annular area 112 to have a gradient of refractive power.

Please refer to Figure 1 again. The buffer solution 120 contains a ciliary muscle paralysis agent. The weight percentage concentration of the ciliary muscle paralysis agent in the buffer solution 120 is ConA, which meets the following conditions: 0 <ConA ≤ 1%. In this way, the concentration of the ciliary muscle paralysis agent is appropriate, which helps relax the ciliary muscle and reduces the probability of side effects of the drug. Or, it may satisfy the following conditions: 0 <ConA ≤ 0.5%. Or, it can meet the following conditions: 0 <ConA ≤ 0.25%. Or, it can meet the following conditions: 0 <ConA ≤ 0.1%. Or, it can satisfy the following conditions: 0 <ConA ≤ 0.05%. Or even, it can meet the following conditions: 0 <ConA ≤ 0.01%. For the preparation method of the aforementioned buffer solution 120, a basic solution can be prepared first. The formula of the basic solution can be a solution for soaking and preserving contact lenses on the market, and then adding a ciliary muscle paralysis agent to the basic solution to the required concentration. In addition, there is no chemical reaction between the basic solution and the cycloplegic agent.

According to the aforementioned contact lens product 100, the composition for preparing the multifocal contact lens 110 may include a blue light absorbing component. In this way, the multifocal contact lens 110 can absorb high-energy blue light, thereby reducing the probability of the retina being damaged by the blue light. According to an embodiment of the present invention, the blue light absorbing component may be 4-(phenyldiazenyl) phenyl methacrylate.

According to the aforementioned contact lens product 100, the composition for preparing the multifocal contact lens 110 may include UV (Ultraviolet) absorbing components, and the UV absorbing components may be but not limited to 2-[3-(2H-benzotriazole-2-yl )-4-hydroxyphenyl]ethyl 2-methacrylate (2-[3-(2H-Benzotriazol-2-yl)-4-hydroxyphenyl]ethyl methacrylate), 2-acrylic acid 2-(4-Benzotriazol-2-yl) -3-Hydroxyphenoxy) ethyl ester (2-(4-benzoyl-3-hydroxyphenoxy)ethyl acrylate), 4-methacryloxy-2-hydroxybenzophenone (4-methacryloxy-2- hydroxybenzophenone), 2-Phenylethyl acrylate, 2-Phenylethyl methacrylate, 2-[2-hydroxy-5-[2-(methacrylic acid) (Oxy)ethyl)phenyl)-2H-benzotriazole (2-(2'-Hydroxy-5'-Methacryloxyethylphenyl)-2H-Benzotriazole) or 2-acrylic acid 2-(4-benzyl-3-hydroxy Phenoxy) ethyl ester (2-(4-Benzoyl-3-Hydroxyphenoxy) Ethyl Acrylate). In this way, the multifocal contact lens 110 can absorb high-energy UV light, thereby reducing the probability of damage to the retina by UV light. According to an embodiment of the present invention, the UV absorbing component is 2-[2-hydroxy-5-[2-(methacryloxy)ethyl]phenyl]-2H-benzotriazole, according to another embodiment of the present invention For example, the UV absorbing component is 2-(4-benzyl-3-hydroxyphenoxy)ethyl 2-acrylate. The aforementioned UV absorbing components can be used together or individually.

According to the aforementioned contact lens product 100, the material of the multifocal contact lens 110 can be Silicone Hydrogel, which can effectively increase the oxygen permeability of the multifocal contact lens 110, and can prevent the cornea from causing red eyes due to hypoxia , Blood streaks, redness and swelling to provide long-term wearing comfort. The aforementioned silicone gel may be, but is not limited to, contact lens materials classified into Group 5 by the US Food and Drug Administration (USFDA), such as Balafilcon A, Comfilcon A, Efrofilcon A, Enfilcon A, Galyfilcon A, Lotrafilcon A, Lotrafilcon B, Narafilcon A, Narafilcon B, Senofilcon A, Delefilcon A, Somofilcon A and other materials.

The composition for preparing the aforementioned hydrogel may include 2-Hydroxyethyl Methacrylate, 3-Methacryloyloxypropyltris (Trimethylsilyloxy) Silane) , 2-Hydroxy-2-methyl-1-phenyl-1-propanone (2-Hydroxy-2-Methyl-Propiophenone), N-Vinyl-2-Pyrrolidinone (N-Vinyl-2-Pyrrolidinone), N ,N-Dimethyl Acrylamide (N,N-Dimethyl Acrylamide), Ethylene Glycol Dimethacrylate (Ethylene Glycol Dimethacrylate), (3-Methyl Acryloxy-2-Hydroxypropoxy) Propylene 3-(3-Methacryloxy-2-Hydroxypropoxy) Propylbis (Trimethylsiloxy) Methylsilane, Isopropyl Alcohol, and Methacrylic Acid.

Preferably, the weight percentages of the components in the silicone hydrogel composition are as follows: hydroxyethyl methacrylate is 0.05% to 25%, and methacryloxypropyl tris(trimethylsiloxyalkyl) silane is 0.1%~40%, 2-hydroxy-2-methyl-1-phenyl-1-propanone is 0.01%~5%, N-vinyl-2-pyrrolidone is 0.1%~35%, N,N- Dimethacrylamide is 0.1%~40%, ethylene glycol dimethacrylate is 0.01%~5%, (3-methacryloxy-2-hydroxypropoxy)propyl bis(tris) (Methylsiloxy) methyl is 0.1%~30%, isopropanol is 0.1%~30%, and methacrylic acid is 0.01%~5%.

More preferably, the weight percentage of each component in the silicone gel composition is as follows: hydroxyethyl methacrylate is 0.1% to 10%, and methacryloxypropyl tris(trimethylsiloxyalkyl) silane is 1%~40%, 2-hydroxy-2-methyl-1-phenyl-1-propanone is 0.1%~2%, N-vinyl-2-pyrrolidone is 1%~35%, N,N- Dimethacrylamide is 1%~20%, ethylene glycol dimethacrylate is 0.1%~2%, (3-methacryloxy-2-hydroxypropoxy)propyl bis(tris) (Methylsiloxy) methyl is 1%-30%, isopropanol is 1%-20%, and methacrylic acid is 0.1%-2%.

The composition for preparing the aforementioned silicone hydrogel may include hydroxyethyl methacrylate, methacryloxypropyl tris(trimethylsiloxyalkyl) silane, 2-hydroxy-2-methyl-1-phenyl- 1-acetone, N-vinyl-2-pyrrolidone, N,N-dimethylacrylamide, ethylene glycol dimethacrylate, 3-acetoxy-2-hydroxypropoxypropyl sealant Terminated Polydimethylsiloxane ((3-Acryloxy-2-Hydroxypropoxypropyl) Terminated Polydimethylsiloxane) and 1-Hexanol (1-Hexanol).

Preferably, the weight percentages of the components in the silicone hydrogel composition are as follows: hydroxyethyl methacrylate is 0.05% to 25%, and methacryloxypropyl tris(trimethylsiloxyalkyl) silane is 0.1%~40%, 2-hydroxy-2-methyl-1-phenyl-1-propanone is 0.01%~5%, N-vinyl-2-pyrrolidone is 0.1%~35%, N,N- Dimethacrylamide is 0.1%~40%, ethylene glycol dimethacrylate is 0.01%~5%, 3-acetoxy-2-hydroxypropoxypropyl terminated polydimethylsiloxane Oxyane is 0.1%-40% and n-hexanol is 0.1%-30%.

More preferably, the weight percentage of each component in the silicone hydrogel composition is as follows: hydroxyethyl methacrylate is 0.1% to 10%, and methacryloxypropyl tris(trimethylsiloxyalkyl) silane is 1%~40%, 2-hydroxy-2-methyl-1-phenyl-1-propanone is 0.1%~2%, N-vinyl-2-pyrrolidone is 1%~35%, N,N- Dimethacrylamide is 1%~20%, ethylene glycol dimethacrylate is 0.1%~2%, 3-acetoxy-2-hydroxypropoxypropyl terminated polydimethylsiloxane Oxyane is 1%-40% and n-hexanol is 1%-30%.

The composition for preparing the aforementioned silicone hydrogel may include hydroxyethyl methacrylate, methacryloxypropyl tris(trimethylsiloxyalkyl) silane, 2-hydroxy-2-methyl-1-phenyl- 1-acetone, N-vinyl-2-pyrrolidone, N,N-dimethylacrylamide, dimethylsiloxane modified urethane oligomer (Polysiloxane Macromer), methyl methacrylate (Methyl Methacrylate) and ethanol (Ethanol).

Preferably, the weight percentages of the components in the silicone hydrogel composition are as follows: hydroxyethyl methacrylate is 0.05% to 25%, and methacryloxypropyl tris(trimethylsiloxyalkyl) silane is 0.1%~40%, 2-hydroxy-2-methyl-1-phenyl-1-propanone is 0.01%~5%, N-vinyl-2-pyrrolidone is 0.1%~35%, N,N- Dimethacrylamide is 0.1%-40%, dimethylsiloxane modified urethane oligomer is 0.1%-40%, methyl methacrylate is 0.1%-20%, and ethanol is 0.1%~ 30%.

More preferably, the weight percentage of each component in the silicone hydrogel composition is as follows: hydroxyethyl methacrylate is 0.1% to 10%, and methacryloxypropyl tris(trimethylsiloxyalkyl) silane is 1%~40%, 2-hydroxy-2-methyl-1-phenyl-1-propanone is 0.1%~2%, N-vinyl-2-pyrrolidone is 1%~35%, N,N- Dimethacrylamide is 1%-20%, dimethylsiloxane modified urethane oligomer is 1%-40%, methyl methacrylate is 1%-10%, and ethanol is 1%~ 20%.

According to an embodiment of the present invention, the composition of the aforementioned silicone hydrogel may further include a blue light absorbing component or a UV absorbing component. Preferably, the weight percentage of the blue absorbing component or UV absorbing component in the aforementioned hydrogel composition is 0.01% ~10%, more preferably, the weight percentage of the blue absorbing component or UV absorbing component in the composition of the aforementioned silicone hydrogel is 0.1%~5%.

By adjusting the ratio of each component in the aforementioned silicone gel, the oxygen permeability and hardness of the multifocal contact lens 110 can be effectively increased. In addition, the aforementioned silicone gel composition can be added with other components according to actual needs.

According to the aforementioned contact lens product 100, the material of the multifocal contact lens 110 can be hydrogel, so as to maintain the moist, smooth and soft and comfortable hydration feeling of the multifocal contact lens 110, which can be used for a long time. Wear, avoid foreign body sensation when wearing. The aforementioned hydrogel may be a contact lens material classified into the first group by the US Food and Drug Administration, that is, a nonionic polymer with a low water content (less than 50% by weight), such as Helfilcon A&B, Hioxifilcon B, Mafilcon, Polymacon, Tefilcon, Tetrafilcon A and other materials. Alternatively, the aforementioned hydrogel may be a contact lens material classified into the second group by the US Food and Drug Administration, that is, a non-ionic polymer with a high water content (greater than 50 weight percent), for example, the name is Acofilcon A, Alfafilcon A , Hilafilcon B, Hioxifilcon A, Hioxifilcon B, Hioxifilcon D, Nelfilcon A, Nesofilcon A, Omafilcon A, Samfilcon A and other materials. Alternatively, the aforementioned hydrogel may be a contact lens material classified into the third group by the US Food and Drug Administration, that is, an ionic polymer with a low water content (less than 50% by weight), for example, the name Deltafilcon A And other materials. Alternatively, the aforementioned hydrogel may be a contact lens material of the fourth group approved by the US Food and Drug Administration, that is, an ionic polymer with a high water content (greater than 50% by weight), for example, the name is Etafilcon A, Focofilcon A, Methafilcon A, Methafilcon B, Ocufilcon A, Ocufilcon B, Ocufilcon C, Ocufilcon D, Ocufilcon E, Phemfilcon A, Vifilcon A and other materials.

The composition for preparing the aforementioned water glue can include hydroxyethyl methacrylate, ethylene glycol dimethacrylate, 2-hydroxy-2-methyl-1-phenyl-1-acetone, glycerol (Glycerol), trihydroxy 1,1,1-Trimethylol Propane Trimethacrylate and methacrylic acid.

Preferably, the weight percentage of each component in the composition of the aforementioned water glue is as follows: hydroxyethyl methacrylate is 10%-96%, ethylene glycol dimethacrylate is 0.01%-5%, 2-hydroxy- 2-methyl-1-phenyl-1-acetone is 0.01%~5%, glycerin is 0.1%~30%, trimethylolpropane trimethacrylate is 0.01%~5%, and methacrylic acid is 0.01% %~5%.

More preferably, the weight percentage of each component in the composition of the aforementioned water glue is as follows: 40%-96% of hydroxyethyl methacrylate, 0.1%-2% of ethylene glycol dimethacrylate, 2-hydroxy- 2-Methyl-1-phenyl-1-acetone is 0.1%~2%, glycerol is 0.1%~20%, trimethylolpropane trimethacrylate is 0.1%~2%, and methacrylic acid is 0.1% %~2%.

The composition for preparing the aforementioned water glue may include hydroxyethyl methacrylate, ethylene glycol dimethacrylate, 2-hydroxy-2-methyl-1-phenyl-1-acetone, glycerin, trimethylolpropane Trimethacrylate and Glycerol Monomethacrylate (Glycerol Monomethacrylate).

Preferably, the weight percentage of each component in the composition of the aforementioned water glue is as follows: hydroxyethyl methacrylate is 10%-94.87%, ethylene glycol dimethacrylate is 0.01%-5%, 2-hydroxy- 2-methyl-1-phenyl-1-acetone is 0.01%~5%, glycerol is 0.1%~30%, trimethylolpropane trimethacrylate is 0.01%~5%, and 2-methyl- 2-Acrylic acid-2,3-dihydroxypropyl ester is 5%~60%.

More preferably, the weight percentage of each component in the composition of the aforementioned water glue is as follows: 40%~79.6% of hydroxyethyl methacrylate, 0.1%~2% of ethylene glycol dimethacrylate, 2-hydroxy- 2-methyl-1-phenyl-1-acetone is 0.1%~2%, glycerol is 0.1%~20%, trimethylolpropane trimethacrylate is 0.1%~2%, and 2-methyl- 2-Acrylic acid-2,3-dihydroxypropyl ester is 20%~50%.

The composition for preparing the aforementioned water glue may include hydroxyethyl methacrylate, ethylene glycol dimethacrylate, 2-hydroxy-2-methyl-1-phenyl-1-acetone, glycerin and N-vinyl- 2-pyrrolidone.

Preferably, the weight percentage of each component in the composition of the aforementioned water glue is as follows: hydroxyethyl methacrylate is 10%-96%, ethylene glycol dimethacrylate is 0.01%-5%, 2-hydroxy- 2-methyl-1-phenyl-1-acetone is 0.01%~5%, glycerol is 0.1%~30%, and N-vinyl-2-pyrrolidone is 0.1%~25%.

More preferably, the weight percentage of each component in the composition of the aforementioned water glue is as follows: 40%-96% of hydroxyethyl methacrylate, 0.1%-2% of ethylene glycol dimethacrylate, 2-hydroxy- 2-Methyl-1-phenyl-1-acetone is 0.1%~2%, glycerol is 1%~20%, and N-vinyl-2-pyrrolidone is 0.1%~10%.

According to an embodiment of the present invention, the composition of the aforementioned hydrogel may further include a blue absorbing component or a UV absorbing component. Preferably, the weight percentage of the blue absorbing component or UV absorbing component in the composition of the aforementioned hydrogel is 0.01%-10 %. More preferably, the weight percentage of the blue absorbing component or the UV absorbing component in the composition of the water gel is 0.1% to 5%.

The water content and softness of the multifocal contact lens 110 can be effectively increased by adjusting the proportions of the components in the water gel. In addition, other components can be added to the composition of the water gel according to actual needs. Monomers used in the hydrogel composition and the silicone hydrogel composition, such as hydroxyethyl methacrylate, methacrylic acid, 2-methyl-2-acrylic acid-2,3-dihydroxypropyl ester, N-vinyl -2-pyrrolidone, methacryloxypropyl tris(trimethylsiloxyalkyl) silane, N,N-dimethylacrylamide, (3-methacryloxy-2-hydroxypropyl) Oxy) propyl bis (trimethylsiloxy) methyl, 3-acetoxy-2-hydroxypropoxy propyl terminated polydimethylsiloxane, methyl methacrylate, etc., also It can be replaced with each other according to actual needs.

Please refer to Figure 2 again, the diameter of the central area 111 of the multifocal contact lens 110 is DiC, which can meet the following conditions: 4 mm ≤ DiC ≤ 10 mm. Thereby, the pupil size can be adjusted flexibly according to different physiological conditions, and the accuracy of correcting myopia in the central area 111 can be improved, so that the image can be completely and clearly presented on the retina. Preferably, it can satisfy the following condition: 5 mm ≤ DiC ≤ 9 mm.

The outer diameter of the first annular zone 112 of the multifocal contact lens 110 is DiP1, which can satisfy the following condition: 6 mm ≤ DiP1 ≤ 17 mm. Thereby, it can be adjusted elastically according to the size of the eye cleft, so as to provide the multifocal contact lens 110 with a proper fitting feeling, and increase the stability of the multifocal contact lens 110 after being worn. Preferably, it can satisfy the following condition: 7 mm ≤ DiP1 ≤ 15 mm.

The diameter of the central area 111 of the multifocal contact lens 110 is DiC, and the outer diameter of the first annular area 112 of the multifocal contact lens 110 is DiP1, which can satisfy the following condition: 0.15 ≤ DiC/DiP1 <1. In this way, the appropriate size of DiC/DiP1 facilitates the design of an appropriate multifocal contact lens 110 according to the physiological condition of the individual's eyeballs, and thus facilitates the correction of myopia.

The refractive power of the central area 111 of the multifocal contact lens 110 is PowC, which can satisfy the following conditions: -6.00 ≤ PowC ≤ -0.25. In this way, it is possible to provide an appropriate degree of myopia correction according to the needs of the user, thereby providing a clear image.

The maximum refractive power of the first annular zone 112 of the multifocal contact lens 110 is PowP1, which can satisfy the following conditions: -5.50 ≤ PowP1 ≤ -0.50. Thereby, the maximum diopter of the first annular zone 112 can be appropriately designed, which is beneficial to correct myopia.

The refractive power of the central area 111 of the multifocal contact lens 110 is PowC, and the maximum refractive power of the first annular area 112 of the multifocal contact lens 110 is PowP1, which can satisfy the following conditions: |PowC − PowP1| ≤ 3. Thereby, it is beneficial to correct myopia, slow down the increase of the diopter of the first annular area 112, and avoid the discomfort caused by the excessive increase of the maximum diopter. Or, it can satisfy the following conditions: |PowC – PowP1| ≤ 2. Or, it can meet the following conditions: |PowC – PowP1| ≤ 1.5. Or, it can satisfy the following conditions: |PowC – PowP1| ≤ 1. Or, it can satisfy the following conditions: |PowC – PowP1| ≤ 0.5. Or even, it can satisfy the following conditions: |PowC – PowP1| ≤ 0.25.

Please refer to FIG. 3, which is a schematic plan view of a multifocal contact lens 210 according to another embodiment of the present invention. The multifocal contact lens 210 includes a central area 211, a first annular area 212, and a second annular area 213. The central area 211, the second annular area 213, and the first annular area 212 are sequentially connected from the center to the periphery and are concentric. The diameter of the central zone 211 is DiC, the outer diameter of the first annular zone 212 is DiP1, and the outer diameter of the second annular zone 213 is DiP2. The diopter of the second annular zone 213 is different from that of the central zone 211. The refractive power of the first annular region 212 is different from the refractive power of the central region 211. In this way, the multifocal contact lens 210 can be given a multifocal function, so that peripheral images can be focused in front of the retina, thereby effectively slowing down the increase in the wheelbase of the eyeball and avoiding the deterioration of myopia. According to an embodiment of the present invention, the diopter of the central area 211 is fixed.

At least one of the central area 211, the first annular area 212, and the second annular area 213 may be aspherical, thereby facilitating the design of the first annular area 212 and/or the second annular area 213 to have a gradient Diopter.

The outer diameter of the second annular zone 213 of the multifocal contact lens 210 is DiP2, which can satisfy the following condition: 5 mm ≤ DiP2 ≤ 13 mm. In this way, the increase in diopter power can be effectively alleviated. Preferably, it can satisfy the following condition: 6 mm ≤ DiP2 ≤ 12 mm.

The diameter of the central area 211 of the multifocal contact lens 210 is DiC, and the outer diameter of the second annular area 213 of the multifocal contact lens 210 is DiP2, which can satisfy the following condition: 0.2 ≤ DiC/DiP2 <1. Thereby, the increase of the diopter of the second annular region 213 can be effectively slowed down, and the discomfort caused by the excessive increase of the diopter can be reduced.

The other properties of the multifocal contact lens 210 can be the same as those of the multifocal contact lens 110, and will not be repeated here.

Please refer to FIG. 4, which is a schematic plan view of a multifocal contact lens 310 according to another embodiment of the present invention. The multifocal contact lens 310 includes a central area 311, a first annular area 312, and a second annular area 313. And the third annular zone 314, the central zone 311, the third annular zone 314, the second annular zone 313, and the first annular zone 312 are connected in sequence from the center to the periphery and are concentric. The diameter of the central zone 311 is DiC, the first The outer diameter of the annular zone 312 is DiP1, the outer diameter of the second annular zone 313 is DiP2, and the outer diameter of the third annular zone 314 is DiP3, wherein the refractive power of the third annular zone 314 is different from that of the central zone 311 The refractive power of the second annular area 313 is different from the refractive power of the central area 311, and the refractive power of the first annular area 312 is different from the refractive power of the central area 311. In this way, the multifocal contact lens 310 can be given a multifocal function, so that peripheral images can be focused in front of the retina, thereby effectively slowing down the increase in the wheelbase of the eyeball and avoiding the deterioration of myopia. According to an embodiment of the present invention, the diopter of the central area 311 is fixed.

It can be seen from Figures 2 to 4 that the multifocal contact lens according to the present invention can have at least one annular zone (the first annular zone (112, 212, 312) concentrically ring outside the central zone (111, 211, 311)) , The second annular zone (213, 313), the third annular zone (314)), the number of annular zones and the configuration of their refractive power can be adjusted flexibly to meet the physiological condition of the individual eyeball, thereby improving the effect of correcting myopia, and can be effective Prevent myopia or control the progression of myopia.

According to the present invention, a contact lens product is further provided, comprising a multifocal contact lens, wherein the composition for preparing the multifocal contact lens contains a blue light absorbing component. In this way, the multifocal contact lens can absorb high-energy blue light, thereby reducing the probability of blue light damage to the retina. Regarding the blue light absorption component, the material of the multifocal contact lens, and other details of the multifocal contact lens, please refer to the content of FIGS. 1 to 4 above, which will not be repeated here.

<The first embodiment>

The multifocal contact lens of the first embodiment includes a central area and a first annular area, the first annular area concentrically surrounds the central area, and at least one of the central area and the first annular area is aspherical. Regarding the first embodiment For example, the structure of multifocal contact lenses can be referred to Figure 2.

In the multifocal contact lens of the first embodiment, the diameter of the central zone is DiC, the outer diameter of the first annular zone is DiP1, the refractive power of the central zone is PowC, and the maximum refractive power of the first annular zone is PowP1. For the values of DiC, DiP1, DiC/DiP1, PowC, PowP1, |PowC-PowP1| in an embodiment, please refer to Table 1. Table 1. The first embodiment DiC (mm) 5.00 PowC (D) -0.25 DiP1 (mm) 13.00 PowP1 (D) 0.25 DiC/DiP1 0.38 |PowC – PowP1| (D) 0.50

Please refer to Table 2 and Figure 5 at the same time. Table 2 lists the radius and the corresponding refractive power of the multifocal contact lens of the first embodiment. Figure 5 shows the radius and refractive power of the multifocal contact lens of the first embodiment. The relationship diagram (negative values only indicate the radius distance in the opposite direction). It can be seen from Table 2 and Figure 5 that the refractive power of the central zone is fixed, and the refractive power of the first ring zone is different from that of the central zone. Specifically, the first ring The refractive power of the shaped area is greater than the refractive power of the central area, and the refractive power of the first annular area increases as it moves away from the central area. Table 2. The first embodiment Radius (mm) Diopter (D) Radius (mm) Diopter (D) -6.50 0.25 0.50 -0.25 -6.00 0.19 1.00 -0.25 -5.50 0.13 1.50 -0.25 -5.00 0.06 2.00 -0.25 -4.50 0.00 2.50 -0.25 -4.00 -0.06 3.00 -0.19 -3.50 -0.13 3.50 -0.13 -3.00 -0.19 4.00 -0.06 -2.50 -0.25 4.50 0.00 -2.00 -0.25 5.00 0.06 -1.50 -0.25 5.50 0.13 -1.00 -0.25 6.00 0.19 -0.50 -0.25 6.50 0.25 0.00 -0.25

The material of the multifocal contact lens of the first embodiment is water gel. For the composition of the water gel of the first embodiment, please refer to Table 3. Table Three Element Content (wt%) Hydroxyethyl methacrylate 82 2-[2-hydroxy-5-[2-(methacryloxy)ethyl]phenyl]-2H-benzotriazole 1.2 Ethylene glycol dimethacrylate 0.4 2-hydroxy-2-methyl-1-phenyl-1-acetone 0.5 glycerin 13.5 Trimethylolpropane Trimethacrylate 0.2 Methacrylate 2.2

It can be seen from Table 3 that by adding 2-[2-hydroxy-5-[2-(methacryloxy)ethyl]phenyl]-2H-benzotriazole, the multifocal contact lens of the first embodiment Can absorb UV light.

<Second embodiment>

The multifocal contact lens of the second embodiment includes a central area, a first annular area, and a second annular area. The central area, the second annular area, and the first annular area are sequentially connected from the center to the periphery and are concentric. At least one of the zone, the second annular zone, and the first annular zone is an aspheric surface. For the structure of the multifocal contact lens of the second embodiment, refer to FIG. 3.

In the multifocal contact lens of the second embodiment, the diameter of the central zone is DiC, the outer diameter of the first annular zone is DiP1, the outer diameter of the second annular zone is DiP2, and the refractive power of the central zone is PowC, the first The maximum refractive power of the annular zone is PowP1, and the maximum refractive power of the second annular zone is PowP2. Regarding DiC, DiP1, DiP2, DiC/DiP1, DiC/DiP2, PowC, PowP1, PowP2, |PowC – PowP1| Please refer to Table 4 for the value of. Table 4. The second embodiment DiC (mm) 5.00 PowC (D) -0.50 DiP1 (mm) 16.00 PowP1 (D) 0.50 DiP2 (mm) 13.00 PowP2 (D) 0.50 DiC/DiP1 0.31 |PowC – PowP1| (D) 1.00 DiC/DiP2 0.38

Please refer to Table 5 and Figure 6 at the same time. Table 5 lists the radius and the corresponding refractive power of the multifocal contact lens of the second embodiment. Figure 6 shows the radius and refractive power of the multifocal contact lens of the second embodiment. The relationship diagram (negative values only indicate the radius distance in the opposite direction). From Table 5 and Figure 6, it can be seen that the refractive power of the central zone is fixed, and the refractive power of the second annular zone is different from that of the central zone. The refractive power of the first annular zone is different from that of the central zone. The refractive power of the central zone is different. Specifically, the refractive power of the second annular zone is greater than the refractive power of the central zone, and the refractive power of the second annular zone increases with distance from the central zone, the refractive power of the first annular zone is greater than the refractive power of the central zone, and The diopter of the first annular zone is fixed. Table 5. Second embodiment Radius (mm) Diopter (D) Radius (mm) Diopter (D) -8.00 0.50 0.50 -0.50 -7.50 0.50 1.00 -0.50 -7.00 0.50 1.50 -0.50 -6.50 0.50 2.00 -0.50 -6.00 0.38 2.50 -0.50 -5.50 0.25 3.00 -0.38 -5.00 0.13 3.50 -0.25 -4.50 0.00 4.00 -0.13 -4.00 -0.13 4.50 0.00 -3.50 -0.25 5.00 0.13 -3.00 -0.38 5.50 0.25 -2.50 -0.50 6.00 0.38 -2.00 -0.50 6.50 0.50 -1.50 -0.50 7.00 0.50 -1.00 -0.50 7.50 0.50 -0.50 -0.50 8.00 0.50 0.00 -0.50

The material of the multifocal contact lens of the second embodiment is water gel. For the composition of the water gel of the second embodiment, please refer to Table 6A. Table 6A Element Content (wt%) Hydroxyethyl methacrylate 44.8 2-[2-hydroxy-5-[2-(methacryloxy)ethyl]phenyl]-2H-benzotriazole 1.2 Ethylene glycol dimethacrylate 0.6 2-hydroxy-2-methyl-1-phenyl-1-acetone 0.6 glycerin 10.5 Trimethylolpropane Trimethacrylate 0.3 2-Methyl-2-acrylic acid-2,3-dihydroxypropyl ester 42

It can be seen from Table 6A that by adding 2-[2-hydroxy-5-[2-(methacryloxy)ethyl]phenyl]-2H-benzotriazole, the multi-focus invisible of the second embodiment The glasses can absorb UV light.

Please refer to Figure 7, which is the relationship between the wavelength and light transmittance of the multifocal contact lens of the second embodiment and the multifocal contact lens of the first comparative example. The difference between the first comparative example and the second embodiment is The first comparative example did not add UV absorbing components. Specifically, the first comparative example replaced 2-[2-hydroxy-5-[2-(methacryloxy)ethyl]phenyl with hydroxyethyl methacrylate ]-2H-benzotriazole. From Figure 7, the blocking rate of the multifocal contact lenses of the first comparative example and the second embodiment to UV-A (UV light in the wavelength range of 316nm~380nm) can be calculated, and the calculation method As follows: (1-average transmittance of wavelength 316~380nm)*100%, and the blocking of UV-B (UV light in the wavelength range of 280nm~315nm) by the multifocal contact lenses of the first comparative example and the second embodiment The calculation method is as follows: (average penetration rate of 1-280nm~315nm)×100%, and the results are listed in Table 6B. Table 6B First comparative example Second embodiment UV-A rejection rate (%) (316 nm ~380 nm) 5.92 73.19 UV-B rejection rate (%) (280 nm ~315 nm) 7.91 96.36

It can be seen from Table 6B that compared with the first comparative example, the UV-A and UV-B rejection rates of the second embodiment are far greater than those of the first comparative example. In other words, the second embodiment has a multi-focus invisible Glasses can effectively absorb UV light, thereby reducing the chance of damage to the retina by UV light.

<The third embodiment>

The multifocal contact lens of the third embodiment includes a central area, a first annular area, and a second annular area. The central area, the second annular area, and the first annular area are sequentially connected from the center to the periphery and are concentric. At least one of the zone, the second annular zone, and the first annular zone is an aspheric surface. For the structure of the multifocal contact lens of the third embodiment, please refer to FIG. 3.

In the multifocal contact lens of the third embodiment, the diameter of the central zone is DiC, the outer diameter of the first annular zone is DiP1, the outer diameter of the second annular zone is DiP2, and the refractive power of the central zone is PowC. The maximum refractive power of the annular zone is PowP1, and the maximum refractive power of the second annular zone is PowP2. Regarding DiC, DiP1, DiP2, DiC/DiP1, DiC/DiP2, PowC, PowP1, PowP2, |PowC – PowP1| Please refer to Table 7 for the value of. Table 7. The third embodiment DiC (mm) 4.00 PowC (D) -1.00 DiP1 (mm) 15.00 PowP1 (D) 0.25 DiP2 (mm) 6.00 PowP2 (D) -0.50 DiC/DiP1 0.27 |PowC – PowP1| (D) 1.25 DiC/DiP2 0.67

Please refer to Table 8 and Figure 8 at the same time. Table 8 lists the radius and the corresponding refractive power of the multifocal contact lens of the third embodiment. Figure 8 shows the radius and refractive power of the multifocal contact lens of the third embodiment. The relationship diagram (negative values only indicate the radius distance in the opposite direction). It can be seen from Table 8 and Figure 8 that the refractive power of the central zone is fixed, and the refractive power of the second annular zone is different from that of the central zone. The refractive power of the first annular zone is different from that of the central zone. The refractive power of the central zone is different. Specifically, the refractive power of the second annular zone is greater than the refractive power of the central zone, and the refractive power of the second annular zone increases with distance from the central zone, the refractive power of the first annular zone is greater than the refractive power of the central zone, and The refractive power of the first annular zone increases with distance from the central zone. Table 8. The third embodiment Radius (mm) Diopter (D) Radius (mm) Diopter (D) -7.50 0.25 0.50 -1.00 -7.00 0.17 1.00 -1.00 -6.50 0.08 1.50 -1.00 -6.00 0.00 2.00 -1.00 -5.50 -0.08 2.50 -0.75 -5.00 -0.17 3.00 -0.50 -4.50 -0.25 3.50 -0.42 -4.00 -0.33 4.00 -0.33 -3.50 -0.42 4.50 -0.25 -3.00 -0.50 5.00 -0.17 -2.50 -0.75 5.50 -0.08 -2.00 -1.00 6.00 0.00 -1.50 -1.00 6.50 0.08 -1.00 -1.00 7.00 0.17 -0.50 -1.00 7.50 0.25 0.00 -1.00

The material of the multifocal contact lens of the third embodiment is water gel. For the composition of the water gel of the third embodiment, please refer to Table 9. Table 9 Element Content (wt%) Hydroxyethyl methacrylate 91 2-[2-hydroxy-5-[2-(methacryloxy)ethyl]phenyl]-2H-benzotriazole 1 Ethylene glycol dimethacrylate 0.6 2-hydroxy-2-methyl-1-phenyl-1-acetone 0.6 glycerin 6.3 N-vinyl-2-pyrrolidone 0.5

It can be seen from Table 9 that by adding 2-[2-hydroxy-5-[2-(methacryloxy)ethyl]phenyl]-2H-benzotriazole, the multifocal contact lens of the third embodiment Can absorb UV light.

<Fourth embodiment>

The multifocal contact lens of the fourth embodiment includes a central area and a first annular area, the first annular area concentrically surrounds the central area, and at least one of the central area and the first annular area is aspherical. Regarding the fourth embodiment For example, the structure of multifocal contact lenses can be referred to Figure 2.

In the multifocal contact lens of the fourth embodiment, the diameter of the central zone is DiC, the outer diameter of the first annular zone is DiP1, the refractive power of the central zone is PowC, and the maximum refractive power of the first annular zone is PowP1. For the values of DiC, DiP1, DiC/DiP1, PowC, PowP1, |PowC-PowP1| of the four embodiments, please refer to Table 10. Table X. Fourth Embodiment DiC (mm) 7.00 PowC (D) -1.50 DiP1 (mm) 14.00 PowP1 (D) -1.00 DiC/DiP1 0.50 |PowC – PowP1| (D) 0.50

Please refer to Table 11 and Figure 9 at the same time. Table 11 lists the radius of the multifocal contact lens of the fourth embodiment and its corresponding diopter (negative value only indicates the radius distance in the opposite direction). Figure 9 is the first The relationship between the radius and the refractive power of the multifocal contact lens of the four embodiments can be seen from Table 11 and Figure 9. The refractive power of the central zone is fixed, and the refractive power of the first annular zone is different from that of the central zone. Specifically, The refractive power of the first annular zone is greater than the refractive power of the central zone, and the refractive power of the first annular zone increases as it moves away from the central zone. Table eleven, fourth embodiment Radius (mm) Diopter (D) Radius (mm) Diopter (D) -7.00 -1.00 0.50 -1.50 -6.50 -1.07 1.00 -1.50 -6.00 -1.14 1.50 -1.50 -5.50 -1.21 2.00 -1.50 -5.00 -1.29 2.50 -1.50 -4.50 -1.36 3.00 -1.50 -4.00 -1.43 3.50 -1.50 -3.50 -1.50 4.00 -1.43 -3.00 -1.50 4.50 -1.36 -2.50 -1.50 5.00 -1.29 -2.00 -1.50 5.50 -1.21 -1.50 -1.50 6.00 -1.14 -1.00 -1.50 6.50 -1.07 -0.50 -1.50 7.00 -1.00 0.00 -1.50

The material of the multifocal contact lens of the fourth embodiment is water gel. For the composition of the water gel of the fourth embodiment, please refer to Table 12A. Table 12A Element Content (wt%) Hydroxyethyl methacrylate 82 2-(4-Benzyl-3-hydroxyphenoxy)ethyl 2-acrylate 1 Ethylene glycol dimethacrylate 0.4 2-hydroxy-2-methyl-1-phenyl-1-acetone 0.6 glycerin 13.6 Trimethylolpropane Trimethacrylate 0.2 Methacrylate 2.2

It can be seen from Table 12A that by adding 2-(4-benzyl-3-hydroxyphenoxy)ethyl 2-acrylate, the multifocal contact lens of the fourth embodiment can absorb UV light.

Please refer to Figure 10, which is the relationship between the wavelength and light transmittance of the multifocal contact lens of the fourth embodiment and the multifocal contact lens of the second comparative example. The difference between the second comparative example and the fourth embodiment is In the second comparative example, no UV absorbing component was added. Specifically, the second comparative example replaced 2-(4-benzyl-3-hydroxyphenoxy)ethyl 2-acrylate with hydroxyethyl methacrylate. In Figure 10, the UV-A (UV light with a wavelength range of 316nm~380nm) can be calculated for the multifocal contact lenses of the second comparative example and the fourth embodiment. The calculation method is as follows: (1-wavelength 316~380nm Average penetration rate)*100%, and the blocking rate of the multifocal contact lenses of the second comparative example and the fourth embodiment to UV-B (UV light with a wavelength range of 280nm~315nm), the calculation method is as follows: (1-280nm ~315nm average penetration rate) × 100%, and the results are listed in Table 12B. Table 12B Second comparative example Fourth embodiment UV-A rejection rate (%) (316 nm ~380 nm) 6.44 79.32 UV-B rejection rate (%) (280 nm ~315 nm) 8.76 98.39

It can be seen from Table 12B that compared with the second comparative example, the UV-A rejection rate and UV-B rejection rate of the fourth embodiment are far greater than those of the second comparative example. In other words, the fourth embodiment has a multi-focus Contact lenses can effectively absorb UV light, thereby reducing the probability of damage to the retina by UV light.

<Fifth Embodiment>

The multifocal contact lens of the fifth embodiment includes a central area, a first annular area, and a second annular area. The central area, the second annular area, and the first annular area are sequentially connected from the center to the periphery and are concentric. At least one of the zone, the second annular zone, and the first annular zone is an aspheric surface. For the structure of the multifocal contact lens of the fifth embodiment, refer to FIG. 3.

In the multifocal contact lens of the fifth embodiment, the diameter of the central zone is DiC, the outer diameter of the first annular zone is DiP1, the outer diameter of the second annular zone is DiP2, the refractive power of the central zone is PowC, the first The maximum refractive power of the annular zone is PowP1, and the maximum refractive power of the second annular zone is PowP2. Regarding DiC, DiP1, DiP2, DiC/DiP1, DiC/DiP2, PowC, PowP1, PowP2, |PowC – PowP1| Please refer to Table 13 for the value of. Table 13, Fifth Embodiment DiC (mm) 8.00 PowC (D) -2.00 DiP1 (mm) 15.00 PowP1 (D) 0 DiP2 (mm) 11.00 PowP2 (D) 0 DiC/DiP1 0.53 |PowC – PowP1| (D) 2.00 DiC/DiP2 0.73

Please refer to Table 14 and Figure 11 at the same time. Table 14 lists the radius and the corresponding refractive power of the multifocal contact lens of the fifth embodiment. Figure 11 shows the radius and the corresponding refractive power of the multifocal contact lens of the fifth embodiment. The diopter relationship diagram (negative values only indicate the radius distance in the opposite direction). From Table 14 and Figure 11, it can be seen that the diopter of the central zone is fixed, and the diopter of the second annular zone is different from that of the central zone. The first annular zone The refractive power of is different from the refractive power of the central zone. Specifically, the refractive power of the second annular zone is greater than that of the central zone, and the refractive power of the second annular zone increases with distance from the central zone. The refractive power of the first annular zone is greater than that of the central zone. Diopter, and the diopter of the first annular zone is fixed. Table 14. Fifth embodiment Radius (mm) Diopter (D) Radius (mm) Diopter (D) -7.50 0.00 0.50 -2.00 -7.00 0.00 1.00 -2.00 -6.50 0.00 1.50 -2.00 -6.00 0.00 2.00 -2.00 -5.50 0.00 2.50 -2.00 -5.00 -0.67 3.00 -2.00 -4.50 -1.33 3.50 -2.00 -4.00 -2.00 4.00 -2.00 -3.50 -2.00 4.50 -1.33 -3.00 -2.00 5.00 -0.67 -2.50 -2.00 5.50 0.00 -2.00 -2.00 6.00 0.00 -1.50 -2.00 6.50 0.00 -1.00 -2.00 7.00 0.00 -0.50 -2.00 7.50 0.00 0.00 -2.00

The material of the multifocal contact lens of the fifth embodiment is water gel. For the composition of the water gel of the fifth embodiment, please refer to Table 15. Table 15 Element Content (wt%) Hydroxyethyl methacrylate 45 2-(4-Benzyl-3-hydroxyphenoxy)ethyl 2-acrylate 0.9 Ethylene glycol dimethacrylate 0.6 2-hydroxy-2-methyl-1-phenyl-1-acetone 0.6 glycerin 10.6 Trimethylolpropane Trimethacrylate 0.3 2-Methyl-2-acrylic acid-2,3-dihydroxypropyl ester 42

It can be seen from Table 15 that by adding 2-(4-benzyl-3-hydroxyphenoxy)ethyl 2-acrylate, the multifocal contact lens of the fifth embodiment can absorb UV light.

<Sixth Embodiment>

The multifocal contact lens of the sixth embodiment includes a central area and a first annular area, the first annular area concentrically surrounds the central area, and at least one of the central area and the first annular area is aspherical. Regarding the sixth embodiment For example, the structure of multifocal contact lenses can be referred to Figure 2.

In the multifocal contact lens of the sixth embodiment, the diameter of the central zone is DiC, the outer diameter of the first annular zone is DiP1, the refractive power of the central zone is PowC, and the maximum refractive power of the first annular zone is PowP1. For the values of DiC, DiP1, DiC/DiP1, PowC, PowP1, |PowC-PowP1| in the six embodiments, please refer to Table 16. Table 16. Sixth embodiment DiC (mm) 9.00 PowC (D) -2.50 DiP1 (mm) 14.00 PowP1 (D) -2.25 DiC/DiP1 0.64 |PowC – PowP1| (D) 0.25

Please refer to Table 17 and Figure 12 at the same time. Table 17 lists the radius and the corresponding refractive power of the multifocal contact lens of the sixth embodiment. Figure 12 shows the radius and the corresponding refractive power of the multifocal contact lens of the sixth embodiment. The diagram of the diopter relationship (negative values only indicate the radius distance in the opposite direction). From Table 17 and Figure 12, it can be seen that the diopter of the central area is fixed, and the diopter of the first annular area is different from that of the central area. Specifically, The refractive power of the first annular zone is greater than the refractive power of the central zone, and the refractive power of the first annular zone increases as it moves away from the central zone. Table 17. The sixth embodiment Radius (mm) Diopter (D) Radius (mm) Diopter (D) -7.00 -2.25 0.50 -2.50 -6.50 -2.30 1.00 -2.50 -6.00 -2.35 1.50 -2.50 -5.50 -2.40 2.00 -2.50 -5.00 -2.45 2.50 -2.50 -4.50 -2.50 3.00 -2.50 -4.00 -2.50 3.50 -2.50 -3.50 -2.50 4.00 -2.50 -3.00 -2.50 4.50 -2.50 -2.50 -2.50 5.00 -2.45 -2.00 -2.50 5.50 -2.40 -1.50 -2.50 6.00 -2.35 -1.00 -2.50 6.50 -2.30 -0.50 -2.50 7.00 -2.25 0.00 -2.50

The material of the multifocal contact lens of the sixth embodiment is water gel. For the composition of the water gel of the sixth embodiment, please refer to Table 18. Table 18 Element Content (wt%) Hydroxyethyl methacrylate 90.4 2-(4-Benzyl-3-hydroxyphenoxy)ethyl 2-acrylate 1.2 Ethylene glycol dimethacrylate 0.6 2-hydroxy-2-methyl-1-phenyl-1-acetone 0.7 glycerin 6.3 N-vinyl-2-pyrrolidone 0.8

It can be seen from Table 18 that by adding 2-(4-benzyl-3-hydroxyphenoxy)ethyl 2-acrylate, the multifocal contact lens of the sixth embodiment can absorb UV light.

<Seventh embodiment>

The multifocal contact lens of the seventh embodiment includes a central area, a first annular area, and a second annular area. The central area, the second annular area, and the first annular area are sequentially connected from the center to the periphery and are concentric. At least one of the zone, the second annular zone, and the first annular zone is an aspheric surface. For the structure of the multifocal contact lens of the seventh embodiment, refer to FIG. 3.

In the multifocal contact lens of the seventh embodiment, the diameter of the central zone is DiC, the outer diameter of the first annular zone is DiP1, the outer diameter of the second annular zone is DiP2, the refractive power of the central zone is PowC, and the first The maximum refractive power of the annular zone is PowP1, and the maximum refractive power of the second annular zone is PowP2. Regarding DiC, DiP1, DiP2, DiC/DiP1, DiC/DiP2, PowC, PowP1, PowP2, |PowC – PowP1| Please refer to Table 19 for the value of. Table Nineteenth Embodiment DiC (mm) 4.00 PowC (D) -3.00 DiP1 (mm) 15.00 PowP1 (D) -1.00 DiP2 (mm) 8.00 PowP2 (D) -2.00 DiC/DiP1 0.27 |PowC – PowP1| (D) 2.00 DiC/DiP2 0.50

Please refer to Table 20 and Figure 13 at the same time. Table 20 lists the radius and the corresponding refractive power of the multifocal contact lens of the seventh embodiment. Figure 13 shows the radius and the corresponding refractive power of the multifocal contact lens of the seventh embodiment. The diopter relationship diagram (negative values only indicate the radius distance in the opposite direction). From Table 20 and Figure 13, it can be seen that the diopter of the central zone is fixed, and the diopter of the second annular zone is different from that of the central zone. The first annular zone The refractive power of is different from the refractive power of the central zone. Specifically, the refractive power of the second annular zone is greater than that of the central zone, and the refractive power of the second annular zone increases with distance from the central zone. The refractive power of the first annular zone is greater than that of the central zone. The diopter, and the diopter of the first annular zone increases as it moves away from the central zone. Table 20. Seventh embodiment Radius (mm) Diopter (D) Radius (mm) Diopter (D) -7.50 -1.00 0.50 -3.00 -7.00 -1.14 1.00 -3.00 -6.50 -1.29 1.50 -3.00 -6.00 -1.43 2.00 -3.00 -5.50 -1.57 2.50 -2.75 -5.00 -1.71 3.00 -2.50 -4.50 -1.86 3.50 -2.25 -4.00 -2.00 4.00 -2.00 -3.50 -2.25 4.50 -1.86 -3.00 -2.50 5.00 -1.71 -2.50 -2.75 5.50 -1.57 -2.00 -3.00 6.00 -1.43 -1.50 -3.00 6.50 -1.29 -1.00 -3.00 7.00 -1.14 -0.50 -3.00 7.50 -1.00 0.00 -3.00

The material of the multifocal contact lens of the seventh embodiment is water gel. For the composition of the water gel of the seventh embodiment, please refer to Table 21A. Table 21A Element Content (wt%) Hydroxyethyl methacrylate 82 Tetraphenyl dimethacrylic acid 1 Ethylene glycol dimethacrylate 0.4 2-hydroxy-2-methyl-1-phenyl-1-acetone 0.6 glycerin 13.5 Trimethylolpropane Trimethacrylate 0.2 Methacrylate 2.3

It can be seen from Table 21A that by adding tetraphenyldimethacrylic acid, the multifocal contact lens of the seventh embodiment can absorb blue light.

Please refer to Figure 14, which is the relationship between the wavelength and light transmittance of the multifocal contact lens of the seventh embodiment and the multifocal contact lens of the third comparative example. The difference between the third comparative example and the seventh embodiment is The third comparative example did not add blue light absorbing components. Specifically, the third comparative example replaced tetraphenyl dimethacrylic acid with hydroxyethyl methacrylate. The third comparative example and the seventh example can be calculated from Fig. 14 The calculation method for the blocking rate of the multifocal contact lens for blue light (wavelength range 380nm~495nm) is as follows: (1-wavelength 380~495nm average transmittance)*100%, and the results are listed in Table 21B. Table 21B The third comparative example Seventh embodiment Blue light rejection rate (%) (380 nm ~ 495 nm) 8.21 35.53

It can be seen from Table 21B that compared with the third comparative example, the blocking rate of the seventh embodiment to blue light is much higher than that of the third comparative example. In other words, the multifocal contact lens of the seventh embodiment can effectively absorb blue light, and thus can Reduce the chance of blue light damage to the retina.

<Eighth Embodiment>

The multifocal contact lens of the eighth embodiment includes a central area and a first annular area, the first annular area concentrically surrounds the central area, and at least one of the central area and the first annular area is an aspheric surface. Regarding the eighth embodiment For example, the structure of multifocal contact lenses can be referred to Figure 2.

In the multifocal contact lens of the eighth embodiment, the diameter of the central zone is DiC, the outer diameter of the first annular zone is DiP1, the refractive power of the central zone is PowC, and the maximum refractive power of the first annular zone is PowP1. For the values of DiC, DiP1, DiC/DiP1, PowC, PowP1, |PowC-PowP1| in the eight embodiments, please refer to Table 22. Table 22. Eighth embodiment DiC (mm) 5.00 PowC (D) -3.50 DiP1 (mm) 10.00 PowP1 (D) -1.75 DiC/DiP1 0.50 |PowC – PowP1| (D) 1.75

Please refer to Table 23 and Figure 15 at the same time. Table 23 lists the radius and the corresponding refractive power of the multifocal contact lens of the eighth embodiment. Figure 15 shows the multifocal contact lens of the eighth embodiment. The diagram of the relationship between radius and diopter (negative values only indicate the radius distance in the opposite direction). From Table 23 and Figure 15, it can be seen that the refractive power of the central zone is fixed, and the refractive power of the first annular zone is different from that of the central zone. In other words, the refractive power of the first annular zone is greater than the refractive power of the central zone, and the refractive power of the first annular zone increases as it moves away from the central zone. Table 23. Eighth embodiment Radius (mm) Diopter (D) Radius (mm) Diopter (D) -5.00 -1.75 0.50 -3.50 -4.50 -2.10 1.00 -3.50 -4.00 -2.45 1.50 -3.50 -3.50 -2.80 2.00 -3.50 -3.00 -3.15 2.50 -3.50 -2.50 -3.50 3.00 -3.15 -2.00 -3.50 3.50 -2.80 -1.50 -3.50 4.00 -2.45 -1.00 -3.50 4.50 -2.10 -0.50 -3.50 5.00 -1.75 0.00 -3.50

The material of the multifocal contact lens of the eighth embodiment is water gel. For the composition of the water gel of the eighth embodiment, please refer to Table 24. Table 24 Element Content (wt%) Hydroxyethyl methacrylate 45 Tetraphenyl dimethacrylic acid 1 Ethylene glycol dimethacrylate 0.5 2-hydroxy-2-methyl-1-phenyl-1-acetone 0.6 glycerin 10.6 Trimethylolpropane Trimethacrylate 0.3 2-Methyl-2-acrylic acid-2,3-dihydroxypropyl ester 42

It can be seen from Table 24 that by adding tetraphenyl dimethacrylic acid, the multifocal contact lens of the eighth embodiment can absorb blue light.

<Ninth Embodiment>

The multifocal contact lens of the ninth embodiment includes a central area, a first annular area, and a second annular area. The central area, the second annular area, and the first annular area are sequentially connected from the center to the periphery and are concentric. At least one of the zone, the second annular zone, and the first annular zone is an aspheric surface. For the structure of the multifocal contact lens of the ninth embodiment, refer to FIG. 3.

In the multifocal contact lens of the ninth embodiment, the diameter of the central zone is DiC, the outer diameter of the first annular zone is DiP1, the outer diameter of the second annular zone is DiP2, the refractive power of the central zone is PowC, and the first The maximum refractive power of the annular zone is PowP1, and the maximum refractive power of the second annular zone is PowP2. Regarding DiC, DiP1, DiP2, DiC/DiP1, DiC/DiP2, PowC, PowP1, PowP2, |PowC – PowP1| Please refer to Table 25 for the value of. Table 25. Ninth embodiment DiC (mm) 6.00 PowC (D) -4.00 DiP1 (mm) 14.00 PowP1 (D) -3.25 DiP2 (mm) 10.00 PowP2 (D) -3.75 DiC/DiP1 0.43 |PowC – PowP1| (D) 0.75 DiC/DiP2 0.60

Please refer to Table 26 and Figure 16 at the same time. Table 26 lists the radius of the multifocal contact lens of the ninth embodiment and its corresponding refractive power. Figure 16 shows the radii of the multifocal contact lens of the ninth embodiment. The diagram of the relationship between radius and diopter (negative values only indicate the radius distance in the opposite direction). From Table 26 and Figure 16, it can be seen that the diopter of the central area is fixed, and the diopter of the second annular area is different from that of the central area. The refractive power of the annular zone is different from the refractive power of the central zone. Specifically, the refractive power of the second annular zone is greater than the refractive power of the central zone, and the refractive power of the second annular zone increases with distance from the central zone, and the refractive power of the first annular zone is greater than The refractive power of the central area, and the refractive power of the first annular area increases as it moves away from the central area. Table 26. Ninth embodiment Radius (mm) Diopter (D) Radius (mm) Diopter (D) -7.00 -3.25 0.50 -4.00 -6.50 -3.38 1.00 -4.00 -6.00 -3.50 1.50 -4.00 -5.50 -3.63 2.00 -4.00 -5.00 -3.75 2.50 -4.00 -4.50 -3.81 3.00 -4.00 -4.00 -3.88 3.50 -3.94 -3.50 -3.94 4.00 -3.88 -3.00 -4.00 4.50 -3.81 -2.50 -4.00 5.00 -3.75 -2.00 -4.00 5.50 -3.63 -1.50 -4.00 6.00 -3.50 -1.00 -4.00 6.50 -3.38 -0.50 -4.00 7.00 -3.25 0.00 -4.00

The material of the multifocal contact lens of the ninth embodiment is water gel. For the composition of the water gel of the ninth embodiment, please refer to Table 27. Table 27 Element Content (wt%) Hydroxyethyl methacrylate 90.3 Tetraphenyl dimethacrylic acid 1.2 Ethylene glycol dimethacrylate 0.6 2-hydroxy-2-methyl-1-phenyl-1-acetone 0.6 glycerin 6.5 N-vinyl-2-pyrrolidone 0.8

It can be seen from Table 27 that by adding tetraphenyl dimethacrylic acid, the multifocal contact lens of the ninth embodiment can absorb blue light.

<Tenth Embodiment>

The multifocal contact lens of the tenth embodiment includes a central area and a first annular area, the first annular area concentrically surrounds the central area, and at least one of the central area and the first annular area is an aspheric surface. Regarding the tenth embodiment For example, the structure of multifocal contact lenses can be referred to Figure 2.

In the multifocal contact lens of the tenth embodiment, the diameter of the central zone is DiC, the outer diameter of the first annular zone is DiP1, the refractive power of the central zone is PowC, and the maximum refractive power of the first annular zone is PowP1. For the values of DiC, DiP1, DiC/DiP1, PowC, PowP1, |PowC-PowP1| in the ten embodiments, please refer to Table 28. Table 28 and tenth embodiment DiC (mm) 7.00 PowC (D) -4.50 DiP1 (mm) 12.00 PowP1 (D) -3.00 DiC/DiP1 0.58 |PowC – PowP1| (D) 1.50

Please refer to Table 29 and Figure 17 at the same time. Table 29 lists the radius of the multifocal contact lens of the tenth embodiment and its corresponding refractive power. Figure 17 shows the multifocal contact lens of the tenth embodiment. The diagram of the relationship between radius and diopter (negative values only indicate the radius distance in the opposite direction). From Table 29 and Figure 17, it can be seen that the refractive power of the central zone is fixed, and the refractive power of the first annular zone is different from that of the central zone. In other words, the refractive power of the first annular zone is greater than the refractive power of the central zone, and the refractive power of the first annular zone increases as it moves away from the central zone. Table 29, Tenth Embodiment Radius (mm) Diopter (D) Radius (mm) Diopter (D) -6.00 -3.00 0.50 -4.50 -5.50 -3.30 1.00 -4.50 -5.00 -3.60 1.50 -4.50 -4.50 -3.90 2.00 -4.50 -4.00 -4.20 2.50 -4.50 -3.50 -4.50 3.00 -4.50 -3.00 -4.50 3.50 -4.50 -2.50 -4.50 4.00 -4.20 -2.00 -4.50 4.50 -3.90 -1.50 -4.50 5.00 -3.60 -1.00 -4.50 5.50 -3.30 -0.50 -4.50 6.00 -3.00 0.00 -4.50

The material of the multifocal contact lens of the tenth embodiment is silicone hydrogel. For the composition of the silicone hydrogel of the tenth embodiment, please refer to Table 30. Table 30 Element Content (wt%) Hydroxyethyl methacrylate 4.3 Methacryloxypropyl tris(trimethylsiloxyalkyl) silane 28 2-hydroxy-2-methyl-1-phenyl-1-acetone 0.6 N-vinyl-2-pyrrolidone 20.2 N,N-Dimethacrylamide 12.3 Ethylene glycol dimethacrylate 0.6 2-(4-Benzyl-3-hydroxyphenoxy)ethyl 2-acrylate 1 (3-Methacryloxy-2-hydroxypropoxy)propyl bis(trimethylsiloxy)methyl 21.5 Isopropanol 10 Methacrylate 1.5

It can be seen from Table 30 that by adding 2-(4-benzyl-3-hydroxyphenoxy)ethyl 2-acrylate, the multifocal contact lens of the tenth embodiment can absorb UV light.

<Eleventh embodiment>

The multifocal contact lens of the eleventh embodiment includes a central area, a first annular area, and a second annular area. The central area, the second annular area, and the first annular area are sequentially connected from the center to the periphery and are concentric. At least one of the central area, the second annular area, and the first annular area is an aspheric surface. For the structure of the multifocal contact lens of the eleventh embodiment, refer to FIG. 3.

In the multifocal contact lens of the eleventh embodiment, the diameter of the central zone is DiC, the outer diameter of the first annular zone is DiP1, the outer diameter of the second annular zone is DiP2, and the refractive power of the central zone is PowC. The maximum refractive power of one annular zone is PowP1, and the maximum refractive power of the second annular zone is PowP2. Regarding DiC, DiP1, DiP2, DiC/DiP1, DiC/DiP2, PowC, PowP1, PowP2, |PowC – Please refer to Table 31 for the value of PowP1|. Table 31. Eleventh embodiment DiC (mm) 8.00 PowC (D) -5.00 DiP1 (mm) 13.00 PowP1 (D) -2.75 DiP2 (mm) 10.00 PowP2 (D) -4.00 DiC/DiP1 0.62 |PowC – PowP1| (D) 2.25 DiC/DiP2 0.80

Please refer to Table 32 and Figure 18 at the same time. Table 32 lists the radius of the eleventh embodiment of the multifocal contact lens and its corresponding refractive power. Figure 18 shows the eleventh embodiment of the multifocal contact lens. The diagram of the relationship between the radius of the glasses and the refractive power (negative values only indicate the radius distance in the opposite direction). From Table 32 and Figure 18, it can be seen that the refractive power of the central zone is fixed, and the refractive power of the second annular zone is different from that of the central zone. The refractive power of the first annular zone is different from the refractive power of the central zone. Specifically, the refractive power of the second annular zone is greater than that of the central zone, and the refractive power of the second annular zone increases with distance from the central zone. The refractive power is greater than the refractive power of the central area, and the refractive power of the first annular area increases as it moves away from the central area. Table thirty-two, eleventh embodiment Radius (mm) Diopter (D) Radius (mm) Diopter (D) -6.50 -2.75 0.50 -5.00 -6.00 -3.17 1.00 -5.00 -5.50 -3.58 1.50 -5.00 -5.00 -4.00 2.00 -5.00 -4.50 -4.50 2.50 -5.00 -4.00 -5.00 3.00 -5.00 -3.50 -5.00 3.50 -5.00 -3.00 -5.00 4.00 -5.00 -2.50 -5.00 4.50 -4.50 -2.00 -5.00 5.00 -4.00 -1.50 -5.00 5.50 -3.58 -1.00 -5.00 6.00 -3.17 -0.50 -5.00 6.50 -2.75 0.00 -5.00

The material of the multifocal contact lens of the eleventh embodiment is silicone hydrogel. For the composition of the silicone hydrogel of the eleventh embodiment, please refer to Table 33A. Table 33A Element Content (wt%) Hydroxyethyl methacrylate 4 Methacryloxypropyl tris(trimethylsiloxyalkyl) silane 28 2-hydroxy-2-methyl-1-phenyl-1-acetone 0.6 N-vinyl-2-pyrrolidone 20.5 N,N-Dimethacrylamide 12.3 Ethylene glycol dimethacrylate 0.5 2-(4-Benzyl-3-hydroxyphenoxy)ethyl 2-acrylate 1.1 3-acetoxy-2-hydroxypropoxypropyl terminated polydimethylsiloxane twenty two N-hexanol 11

It can be seen from Table 33A that by adding 2-(4-benzyl-3-hydroxyphenoxy)ethyl 2-acrylate, the multifocal contact lens of the eleventh embodiment can absorb UV light.

Please refer to Figure 19, which is the relationship between the wavelength and light transmittance of the multifocal contact lens of the eleventh embodiment and the multifocal contact lens of the fourth comparative example. The relationship between the fourth comparative example and the eleventh embodiment The difference is that the fourth comparative example does not add UV absorbing components. Specifically, the fourth comparative example replaces 2-(4-benzyl-3-hydroxyphenoxy)ethyl 2-acrylate with hydroxyethyl methacrylate. From Figure 19, the UV-A (UV light with a wavelength range of 316nm~380nm) can be calculated for the multifocal contact lenses of the fourth comparative example and the eleventh example. The calculation method is as follows: (1-wavelength 316 ~380nm average transmittance)*100%, and the UV-B (UV light wavelength range of 280nm~315nm) blocking rate of the multifocal contact lenses of the fourth comparative example and the eleventh example, the calculation method is as follows: (Average penetration rate of 1-280nm~315nm)×100%, and the results are listed in Table 33B. Table 33B Fourth comparative example Eleventh embodiment UV-A rejection rate (%) (316 nm ~380 nm) 15.02 90.01 UV-B rejection rate (%) (280 nm ~315 nm) 40.91 99.24

It can be seen from Table 33B that, compared with the fourth comparative example, the blocking rate of the eleventh embodiment to UV-A and the blocking rate of UV-B are far greater than that of the fourth comparative example. In other words, the eleventh embodiment The multi-focal contact lenses of the can effectively absorb UV light, thereby reducing the chance of damage to the retina by UV light.

<Twelfth Embodiment>

The multifocal contact lens of the twelfth embodiment includes a central zone, a first annular zone, a second annular zone, and a third annular zone. The central zone, the third annular zone, the second annular zone, and the first annular zone are composed of The center to the periphery are sequentially connected and concentric. At least one of the central area, the third ring area, the second ring area, and the first ring area is aspherical. For the structure of the multifocal contact lens of the twelfth embodiment, please refer to Figure 4.

In the multifocal contact lens of the twelfth embodiment, the diameter of the central zone is DiC, the outer diameter of the first annular zone is DiP1, the outer diameter of the second annular zone is DiP2, and the outer diameter of the third annular zone is DiP2. DiP3, the refractive power of the central zone is PowC, the maximum refractive power of the first annular zone is PowP1, the maximum refractive power of the second annular zone is PowP2, and the maximum refractive power of the third annular zone is PowP3. Regarding the DiC of the twelfth embodiment, For the values of DiP1, DiP2, DiP3, DiC/DiP1, DiC/DiP2, PowC, PowP1, PowP2, PowP3, |PowC – PowP1|, please refer to Table 34. Table 34. Twelfth embodiment DiC (mm) 4.00 PowC (D) -5.50 DiP1 (mm) 16.00 PowP1 (D) -3.00 DiP2 (mm) 12.00 PowP2 (D) -3.00 DiP3 (mm) 8.00 PowP3 (D) -3.75 DiC/DiP1 0.25 |PowC – PowP1| (D) 2.50 DiC/DiP2 0.33

Please refer to Table 35 and Figure 20 at the same time. Table 35 lists the radius and the corresponding refractive power of the multifocal contact lens of the twelfth embodiment. Figure 20 shows the multifocal contact lens of the twelfth embodiment. The diagram of the relationship between the radius of the glasses and the refractive power (negative values only indicate the radius distance in the opposite direction). From Table 35 and Figure 20, it can be seen that the refractive power of the central zone is fixed, and the refractive power of the third annular zone is different from that of the central zone. The refractive power of the second annular zone is different from the refractive power of the central zone, and the refractive power of the first annular zone is different from the refractive power of the central zone. Specifically, the refractive power of the third annular zone is greater than the refractive power of the central zone, and the refractive power of the third annular zone The diopter of the second annular area increases with distance from the central area, and the diopter of the second annular area increases with the distance from the central area. The diopter of the first annular area is greater than that of the central area, and the diopter of the first ring The diopter of the shape zone is fixed. Table 35 and Twelfth Embodiment Radius (mm) Diopter (D) Radius (mm) Diopter (D) -8.00 -3.00 0.50 -5.50 -7.50 -3.00 1.00 -5.50 -7.00 -3.00 1.50 -5.50 -6.50 -3.00 2.00 -5.50 -6.00 -3.00 2.50 -5.06 -5.50 -3.19 3.00 -4.63 -5.00 -3.38 3.50 -4.19 -4.50 -3.56 4.00 -3.75 -4.00 -3.75 4.50 -3.56 -3.50 -4.19 5.00 -3.38 -3.00 -4.63 5.50 -3.19 -2.50 -5.06 6.00 -3.00 -2.00 -5.50 6.50 -3.00 -1.50 -5.50 7.00 -3.00 -1.00 -5.50 7.50 -3.00 -0.50 -5.50 8.00 -3.00 0.00 -5.50

The material of the multifocal contact lens of the twelfth embodiment is silicone hydrogel. For the composition of the hydrogel of the twelfth embodiment, please refer to Table 36A. Table 36A Element Content (wt%) Hydroxyethyl methacrylate 4.2 Methacryloxypropyl tris(trimethylsiloxyalkyl) silane 26 2-hydroxy-2-methyl-1-phenyl-1-acetone 0.6 N-vinyl-2-pyrrolidone 20 N,N-Dimethacrylamide 11 Dimethylsiloxane modified urethane oligomer twenty four Tetraphenyl dimethacrylic acid 1 Methyl methacrylate 4.2 Ethanol 9

It can be seen from Table 36A that by adding tetraphenyldimethacrylic acid, the multifocal contact lens of the twelfth embodiment can absorb blue light.

Please refer to Figure 21, which is the relationship between the wavelength and the light transmittance of the multifocal contact lens of the twelfth embodiment and the multifocal contact lens of the fifth comparative example, the fifth comparative example and the twelfth embodiment The difference is that the fifth comparative example does not add blue light absorbing components. Specifically, the fifth comparative example uses hydroxyethyl methacrylate instead of tetraphenyl dimethacrylic acid. From Figure 21, the fifth comparative example and the tenth comparative example can be calculated. The blocking rate of the multifocal contact lens of the second embodiment for blue light (wavelength range 380nm~495nm) is calculated as follows: (1-wavelength 380~495nm average transmittance)*100%, and the results are listed in Table 30 Six B. Table 36B Fifth comparative example Twelfth embodiment Blue light rejection rate (%) (380 nm ~ 495 nm) 10.31 16.32

It can be seen from Table 36B that, compared with the fifth comparative example, the blocking rate of the twelfth embodiment to blue light is much greater than that of the fifth comparative example. In other words, the multifocal contact lens of the twelfth embodiment can effectively absorb blue light. In turn, the chance of blue light damage to the retina can be reduced.

The aspheric surface on the multifocal contact lens in the present invention refers to the curved shape of the front surface or the back surface under the cross-section through the center, wherein the front surface refers to the surface away from the cornea of the eye, and the back surface refers to the surface close to the cornea of the eye.

The refractive power in the present invention is represented by the D value. When the refractive power of the lens for correcting myopia is a negative value, the refractive power of the lens for correcting hyperopia is a positive value.

The cycloplegic agents in the present invention include but are not limited to Atropine (Atropine; (3-endo)-8-Methyl-8-azabicyclo[3.2.1]oct-3-yl tropate), Tropicamide (Tropicamide; N-Ethyl-3-hydroxy-2-phenyl-N-(4-pyridinylmethyl)propanamide), Cyclopentolate (Cyclopentolate; 2-(Dimethylamino)ethyl (1-hydroxycyclopentyl)(phenyl)acetate), Hoomato Products (Homatropine; (3-endo)-8-Methyl-8-azabicyclo[3.2.1]oct-3-yl hydroxy(phenyl)acetate), scopolamine (Scopolamine; (1R,2R,4S,5S,7s)- 9-Methyl-3-oxa-9-azatricyclo[3.3.1.0 ^2,4 ]non-7-yl(2S)-3-hydroxy-2-phenylpropanoate) and Eucatropine (1,2,2, 6-Tetramethyl-4-piperidinyl hydroxy(phenyl)acetate) and salts of the aforementioned substances. Ciliary muscle paralysis agents are also known as mydriatics and belong to parasympathetic nerve blockers. They are also a non-selective M-type muscarinic receptor blocker, which can block muscarinic receptors. The organ paralyzes and relaxes the ciliary muscles that control the pupils, which in turn enlarges the pupils.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone familiar with the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection of the present invention The scope shall be subject to the scope of the attached patent application.

100: Contact lens products 110,210,310: Multifocal contact lenses 111, 211, 311: central area 112, 212, 312: the first ring zone 120: buffer solution 213,313: the second ring zone 314: Third Ring DiC: Diameter of the central area DiP1: The outer diameter of the first annular zone DiP2: The outer diameter of the second annular zone DiP3: The outer diameter of the third annular zone PowC: Diopter of the central area PowP1: The maximum diopter of the first annular zone PowP2: Maximum diopter of the second annular zone PowP3: Maximum refractive power of the third ring zone

In order to make the above and other objectives, features, advantages and embodiments of the present invention more comprehensible, the description of the accompanying drawings is as follows: Figure 1 is a schematic diagram of a contact lens product according to an embodiment of the present invention; Figure 2 is a schematic plan view of the multifocal contact lens in Figure 1; Figure 3 is a schematic plan view of a multifocal contact lens according to another embodiment of the present invention; Figure 4 is a schematic plan view of a multifocal contact lens according to another embodiment of the present invention; Figure 5 is a diagram of the relationship between the radius and the refractive power of the multifocal contact lens of the first embodiment; Figure 6 is a diagram of the relationship between the radius and the refractive power of the multifocal contact lens of the second embodiment; Fig. 7 is a graph showing the relationship between wavelength and light transmittance of the multifocal contact lens of the second embodiment and the multifocal contact lens of the first comparative example; Figure 8 is a diagram of the relationship between the radius and the refractive power of the multifocal contact lens of the third embodiment; Figure 9 is a diagram of the relationship between the radius and the refractive power of the multifocal contact lens of the fourth embodiment; FIG. 10 is a graph of the relationship between wavelength and light transmittance of the multifocal contact lens of the fourth embodiment and the multifocal contact lens of the second comparative example; Figure 11 is a diagram of the relationship between the radius and the refractive power of the multifocal contact lens of the fifth embodiment; Figure 12 is a diagram of the relationship between the radius and the refractive power of the multifocal contact lens of the sixth embodiment; Figure 13 is a diagram showing the relationship between the radius and the refractive power of the multifocal contact lens of the seventh embodiment; Figure 14 is a graph showing the relationship between wavelength and light transmittance of the multifocal contact lens of the seventh embodiment and the multifocal contact lens of the third comparative example; Figure 15 is a diagram of the relationship between the radius and the refractive power of the multifocal contact lens of the eighth embodiment; Figure 16 is a diagram of the relationship between the radius and the refractive power of the multifocal contact lens of the ninth embodiment; Figure 17 is a diagram of the relationship between the radius and the refractive power of the multifocal contact lens of the tenth embodiment; Figure 18 is a diagram of the relationship between the radius and the refractive power of the multifocal contact lens of the eleventh embodiment; Figure 19 is a graph showing the relationship between wavelength and light transmittance of the multifocal contact lens of the eleventh embodiment and the multifocal contact lens of the fourth comparative example; Figure 20 is a diagram showing the relationship between the radius and the refractive power of the multifocal contact lens of the twelfth embodiment; and Fig. 21 is a graph showing the relationship between wavelength and light transmittance of the multifocal contact lens of the twelfth example and the multifocal contact lens of the fifth comparative example.

100: Contact lens products

110: Multifocal contact lenses

120: buffer solution

Claims (10)

A contact lens product, including: A multifocal contact lens, including: A central area; and At least one annular zone, the annular zone surrounds the central zone, the refractive power of the annular zone is different from the refractive power of the central zone, and the annular zone closest to the periphery of the multifocal contact lens is a first annular zone; and A buffer solution, the buffer solution contains a ciliary muscle paralysis agent, and the multifocal contact lens is immersed in the buffer solution; Wherein, the composition of the multifocal contact lens includes a UV absorbing component, the refractive power of the central area of the multifocal contact lens is PowC, the maximum refractive power of the first annular area of the multifocal contact lens is PowP1, and the multifocal contact lens has a refractive power of PowP1. The diameter of the central area of the contact lens is DiC, and the weight percentage concentration of the ciliary muscle paralysis agent in the buffer solution is ConA, which meets the following conditions: 2.25 D ≤ PowP1 – PowC; 4 mm ＜ DiC ≤ 9 mm; and 0.01% ＜ ConA ＜ 0.5%. The contact lens product according to claim 1, wherein the weight percentage concentration of the ciliary muscle paralysis agent in the buffer solution is ConA, which meets the following conditions: 0.01% <ConA ≤ 0.25%. The contact lens product according to claim 2, wherein the weight percentage concentration of the ciliary muscle paralysis agent in the buffer solution is ConA, which meets the following conditions: 0.05% ≤ ConA ≤ 0.25%. The contact lens product according to claim 1, wherein the multifocal contact lens contains a blue light absorbing component, and the blue light absorbing component is tetraphenyl dimethacrylate (4-(phenyldiazenyl) phenyl methacrylate). The contact lens product according to claim 1, wherein the composition for preparing the hydrogel comprises hydroxyethyl methacrylate, methacrylic acid, glycerin, N-vinyl-2-pyrrolidone, and ethylene glycol dimethacrylate Esters and 2-hydroxy-2-methyl-1-phenyl-1-propanone. The contact lens product according to claim 1, wherein the composition for preparing the hydrogel comprises hydroxyethyl methacrylate, methacrylic acid, glycerin, ethylene glycol dimethacrylate and 2-hydroxy-2-methyl -1-Phenyl-1-acetone. The contact lens product according to claim 1, wherein the composition for preparing the hydrogel comprises hydroxyethyl methacrylate, methacrylic acid, glycerin, ethylene glycol dimethacrylate, trimethylolpropane trimethyl Acrylate and 2-hydroxy-2-methyl-1-phenyl-1-propanone. The contact lens product according to claim 1, wherein the composition for preparing the hydrogel comprises hydroxyethyl methacrylate, 2,3-dihydroxypropyl 2-methyl-2-acrylate, methacrylic acid, and glycerin , N-vinyl-2-pyrrolidone, ethylene glycol dimethacrylate, trimethylolpropane trimethacrylate and 2-hydroxy-2-methyl-1-phenyl-1-propanone. The contact lens product according to claim 1, wherein the composition for preparing the hydrogel comprises hydroxyethyl methacrylate, glycerin, ethylene glycol dimethacrylate and 2-hydroxy-2-methyl-1-benzene基-1-acetone. The contact lens product according to claim 1, wherein the composition for preparing the hydrogel comprises hydroxyethyl methacrylate, 2,3-dihydroxypropyl 2-methyl-2-acrylate, glycerin, dimethyl Ethylene glycol acrylate and 2-hydroxy-2-methyl-1-phenyl-1-propanone.

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