CN110251073B - Diagnostic device for intelligently screening strabismus and diopter - Google Patents
Diagnostic device for intelligently screening strabismus and diopter Download PDFInfo
- Publication number
- CN110251073B CN110251073B CN201910650095.4A CN201910650095A CN110251073B CN 110251073 B CN110251073 B CN 110251073B CN 201910650095 A CN201910650095 A CN 201910650095A CN 110251073 B CN110251073 B CN 110251073B
- Authority
- CN
- China
- Prior art keywords
- strabismus
- grating
- diopter
- optotype
- light source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 208000004350 Strabismus Diseases 0.000 title claims abstract description 81
- 238000012216 screening Methods 0.000 title claims abstract description 20
- 210000001508 eye Anatomy 0.000 claims abstract description 88
- 230000003287 optical effect Effects 0.000 claims abstract description 54
- 238000003384 imaging method Methods 0.000 claims abstract description 41
- 238000003745 diagnosis Methods 0.000 claims abstract description 30
- 238000012545 processing Methods 0.000 claims abstract description 13
- 238000004891 communication Methods 0.000 claims abstract description 11
- 210000001747 pupil Anatomy 0.000 claims description 33
- 238000001514 detection method Methods 0.000 claims description 23
- 230000004438 eyesight Effects 0.000 claims description 21
- 230000008859 change Effects 0.000 claims description 16
- 210000003128 head Anatomy 0.000 claims description 7
- 239000004973 liquid crystal related substance Substances 0.000 claims description 6
- 210000001061 forehead Anatomy 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 18
- 210000005252 bulbus oculi Anatomy 0.000 description 12
- 238000012360 testing method Methods 0.000 description 10
- 230000000007 visual effect Effects 0.000 description 10
- 210000004087 cornea Anatomy 0.000 description 7
- 210000001525 retina Anatomy 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 238000007726 management method Methods 0.000 description 3
- 238000013507 mapping Methods 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 230000004382 visual function Effects 0.000 description 3
- 208000029091 Refraction disease Diseases 0.000 description 2
- 230000004430 ametropia Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000030533 eye disease Diseases 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 208000014733 refractive error Diseases 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 241001270131 Agaricus moelleri Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000013523 data management Methods 0.000 description 1
- 238000013135 deep learning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002405 diagnostic procedure Methods 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 208000001491 myopia Diseases 0.000 description 1
- 230000004379 myopia Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/103—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining refraction, e.g. refractometers, skiascopes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/14—Arrangements specially adapted for eye photography
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Ophthalmology & Optometry (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Eye Examination Apparatus (AREA)
Abstract
The invention discloses an intelligent screening strabismus and diopter diagnosis device, which comprises an optical system and a processing control unit, wherein the optical system comprises a strabismus imaging light path and a diopter imaging light path, the two light paths share an infrared camera and a light source, the infrared camera and the light source are arranged on an arc-shaped guide rail and synchronously move, the infrared camera moves to the front of eyes to detect diopter or the light source moves to the front of eyes to detect strabismus, the strabismus imaging light path also comprises a optotype, a grating and an optotype switching structure, the optotype is uniquely and fixedly arranged between the grating and the optotype switching structure and the light source, and the grating and the optotype switching structure intelligently complete eye shielding and optotype switching without additional manual operation; the processing control unit comprises an SOC processor, a wireless communication module, a touch screen and a power supply, wherein the SOC processor is respectively connected with the wireless communication module, the touch screen, the power supply and the optical system. The device can be used for intelligently diagnosing strabismus and diopter.
Description
Technical Field
The invention relates to a medical ophthalmic photoelectric instrument, in particular to an intelligent strabismus screening and diopter diagnosing device which is used for strabismus screening and diopter detection.
Background
Children under 7 years old are in the key stage and sensitive stage of visual function development, and visual function can be normally developed only under good visual environment; in early stage of children, various strabismus, ametropia and other diseases are easy to occur, if the disease is not found in early stage, normal development of the vision of the children is often affected, and vision is low; strabismus is a common ophthalmic disease, and affects not only appearance, but also visual functions and physical and mental health of the eyes of a patient. Therefore, early screening can be used as an important means for finding children's eye diseases and vision problems, so that some common eye diseases of children can be found and treated early, and the incidence rate is reduced.
The prior ophthalmic strabismus diagnosis method of the hospital comprises a covering method, a cornea mapping method, a visual field meter method and a synoptic method, wherein the covering method is the most common strabismus diagnosis method, and the mitsubishi lens covering method matched with the mitsubishi lens is a method for measuring the strabismus angle more accurately. Specifically, at present, a manual method is adopted in hospitals to perform strabismus examination: looking at a 33cm optotype, looking at a 6m optotype Mitsubishi microscopic examination, looking at an outdoor optotype, and a coverage test, but the above conventional detection method has the following disadvantages: (1) The eyeball movement speed is high during examination, so that a professional ophthalmologist or optometrist is required to carefully observe and repeatedly confirm to perform diagnosis, and the time and the effort are consumed; (2) When the eye is checked by the covering method, the eyes are required to be covered for multiple times, the repeated test is carried out, the time for manually covering the eyes is different, and finally the test result is influenced; (3) The detected data is recorded manually, so that the possibility of errors exists, and the diagnosis result is finally influenced.
In addition, most of the current ophthalmic testing and diagnosing apparatuses can only perform strabismus screening or can only detect diopter, if a plurality of ophthalmic visual items are needed to be tested, a plurality of separate testing apparatuses are needed, which is very inconvenient and more expensive for testing units and personnel to be tested.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide an intelligent screening strabismus and diopter diagnosis device which is used for strabismus screening and diopter detection, diagnosis automation and data digitization can be realized by using the device, missed diagnosis and misdiagnosis caused by manual operation are avoided, and data analysis statistics can be carried out.
The technical scheme adopted for solving the technical problems is as follows:
the device comprises an optical system and a processing control unit, wherein the optical system comprises a strabismus imaging optical path and a diopter imaging optical path, the strabismus imaging optical path and the diopter imaging optical path share an infrared camera and a light source, the light source comprises a light source body and a light filter arranged in front of the light source body, the infrared camera and the light source are arranged on an arc-shaped guide rail and synchronously move, the infrared camera moves to the right front of an eye for diopter detection or the light source moves to the right front of the eye for strabismus detection, the strabismus imaging optical path further comprises a sighting mark, a grating and a sighting mark switching structure, the sighting mark is uniquely and fixedly arranged between the grating, the sighting mark switching structure and the light source, and the grating and the sighting mark switching structure can intelligently complete eye shielding and sighting distance switching without additional manual operation; the processing control unit comprises an SOC processor, a wireless communication module, a touch screen and a power supply, wherein the SOC processor is respectively connected with the wireless communication module, the touch screen, the power supply and the optical system, and the SOC processor collects and stores detection data and intelligently analyzes the data to obtain a diagnosis result.
Further, the grating and sighting target switching structure comprises an electronic grating component, the electronic grating component comprises a grating controller and a grating, the grating controller is connected with the SOC processor, the grating is electrified under the control of the grating controller to generate liquid crystal inversion, and light cannot pass through to shield eyes.
Further, the grating and sighting target switching structure comprises a zooming control component, the zooming control component is matched with the sighting target to achieve 33cm and simulate 6m of sighting distance, the zooming control component comprises a zooming lens and an electromagnet which are mutually connected, the electromagnet is connected with the SOC processor, and whether the electromagnet is electrified or not can drive the zooming lens to move into or move out of the strabismus imaging optical path, so that the sighting distance switching function is achieved.
Further, the device is provided with a dual optical system, i.e. one set of the optical systems is provided for each of the left and right eyes.
Further, the device is also provided with a head support and a base structure, and the head support and the base structure comprises a support, a knob, a base, a forehead support, a chin support, a screw and a bevel gear, wherein the support and the base are vertically arranged, the knob, the chin support, the screw and the bevel gear form a lifting mechanism to be arranged on the support, the knob is rotated, and the screw is driven to rotate through bevel gear transmission, so that the chin support can move up and down.
Further, the light source body comprises a fixation lamp and a plurality of infrared lamps arranged around the fixation lamp, and the fixation lamp and the plurality of infrared lamps are arranged on the same lamp panel. The intelligent strabismus and diopter screening diagnosis device provided by the invention has the following application scene: an ophthalmic hospital or a primary community hospital or a vision inspection center (with a liftable head rest support and a base on which the screening device is fixed for operation).
The strabismus detection principle of the invention: a masking method and a cornea mapping method are adopted. If the light valve of the right eye is electrified, the right eye does not see an external object at the moment, the sight distance is switched to 33cm through an optical system (the sight distance can be switched between 33cm/6 m), the fixation lamp flickers to guide the front sighting target of the left eye, the infrared lamp behind the light valve of the right eye is turned on at the moment, and the position of a reflecting point of the infrared lamp on the pupil of the right eye is shot to change (about 30 s); then adjusting the viewing distance to 6m for shooting; and comparing and analyzing the position change of the reflecting point of the infrared lamp on the pupils in the two videos, analyzing whether the eye position of the eyeball changes, and judging whether the right eye has strabismus.
Diopter detection principle of the invention: infrared eccentric photography is adopted for optometry. The light source emits infrared light, the infrared light is synchronously triggered with the camera, the camera acquires an illuminance gradient gray level image reflected by the light source on the retina, the brightness of the retina of the human eye with ametropia is different from that of the normal human eye, and the diopter of the human eye is calculated by analyzing the brightness, the position and the area of the facula on the image.
The invention comprises two major parts: the optical system comprises a strabismus imaging optical path and a diopter imaging optical path, strabismus and diopter detection are respectively completed by the strabismus imaging optical path and the diopter imaging optical path, an infrared camera and a light source are shared by the strabismus imaging optical path and the diopter imaging optical path, the infrared camera and the light source are arranged on an arc-shaped guide rail, the strabismus imaging optical path further comprises a sighting target, a grating and a sighting target switching structure, the grating and the sighting target switching structure are used for completing eye shielding and a sighting distance switching action; the actual distance between the optotype and the person to be measured is 33cm, the invention realizes the shielding of eyes by controlling the opening and closing of the grating through the grating controller, and realizes the equivalent of 6m of the simulation of the visual distance by controlling the electromagnet to cut into the light path through the control circuit.
The processing control unit comprises an embedded SOC processor, a wireless communication module, a display screen and power management. The embedded SOC processor is used for acquiring and processing current image data, identifying images, analyzing gray scales and calculating diopters to finish strabismus and diopter diagnosis; the wireless communication module is used for transmitting and storing data to the cloud server, can be connected with the wireless printer and the identity identifier, prints diagnosis data results, is safe and reliable in user data management, and saves time and labor; the display screen is used for providing a UI operation interface, displaying test data information and the like, and can perform touch operation to realize the functions of shooting, controlling, storing and the like of images; the power management provides power for the whole system and the battery charge and discharge management. For convenient use, the device of the invention can be provided with a base and a head support bracket which can be lifted.
The device provided by the invention is provided with the electronic grating, and a control circuit is provided for electrifying the electronic grating to realize eye shielding: when detecting, the liquid crystal is reversed after the light valve is powered on, and light cannot pass through the liquid crystal to shield eyes.
The invention embeds an optical system capable of switching different visual distances, by designing an automatically controlled zoom lens with fixed magnification, the visual distance of 33cm is equivalent to the visual distance of actual 6m, namely, the visual distance can be switched between 33cm/6m, and the visual target seen by the zoom lens is reduced by matching with the zoom lens, so that the actual 6m visual distance effect is simulated and equivalent, in particular: when the vision distance is 33cm, the zoom lens moves out of the light path, so that the distance between the vision mark and the pupil is 33cm; when the sight distance is 6m, the electromagnet is electrified to control the zoom lens to move into the light path, at the moment, the sight mark seen by the zoom lens is reduced, the distance between the sight mark and the pupil is simulated to be 6m, and the two sight distances can be switched through a mechanical structure, and the quick alignment and positioning can be realized.
The infrared lamp, the fixation lamp and the infrared filter are arranged in the device, cornea reflection stray light can be effectively eliminated through the infrared annular subsection and the infrared filter, and interference to human eyes can be reduced: when shooting, the fixation lamp twinks to attract the front of the eyes, the infrared lamp irradiates the eyes of the human, and the interference to the eyes can be reduced due to the effect of the infrared filter.
The infrared camera of the device is internally provided with the USB3.0 high-definition camera, so that the transmission image is clear, and the speed is faster and more stable.
The infrared lamp and the camera of the device are arranged on an arc-shaped guide rail and synchronously move, and can move to the right front of eyes through structural design to perform diopter detection or strabismus detection.
The device uploads the acquired image data to the server through the built-in wireless communication module, and performs analysis and statistics on the data by using a deep learning algorithm.
The device is internally provided with the high-performance embedded SOC processor and integrates the image processing unit, so that the real-time processing of the high-resolution image can be realized. The embedded SOC processor has rich interfaces, small volume and low power consumption, can be powered by a battery, greatly reduces the volume of the whole product, and improves and realizes the portability of the product.
The device is internally provided with the liquid crystal screen and the touch screen, provides a friendly man-machine interaction interface, is convenient to operate, can check detection data, performs on-site analysis and timely makes diagnosis results, and can manage image data.
The device of the invention is used for carrying out strabismus digital diagnosis and comprises the following steps: and acquiring videos of the tested person in different coverage modes, analyzing each frame of image in the acquired videos to obtain central coordinates and position change information of pupils, and diagnosing according to the coverage modes, the vision distance and the change information of the reflecting point positions in the pupils to obtain strabismus diagnosis results.
The diopter digital diagnosis by using the device comprises the following steps: the light source emits infrared light, the infrared light is triggered synchronously with the camera, the camera acquires an illuminance inclination gray scale image reflected by the light source on the retina, and the diopter of the human eye is calculated by analyzing the brightness, the position and the area of the facula on the image.
The invention has high technological content, friendly man-machine interaction and convenient operation, can rapidly and accurately screen, has high intelligent degree and greatly improves the user experience.
Drawings
FIG. 1 is a block diagram of the apparatus of the present invention;
fig. 2 is a schematic diagram of a squint imaging light path: (a) a squint imaging light path; (b) an infrared lamp panel magnification schematic;
fig. 3 is a schematic diagram of a raster and optotype switching structure: (a) an electronic grating assembly; (b) a zoom control assembly;
fig. 4 is a schematic view of a diopter imaging optical path: (a) a diopter imaging optical path; (b) an infrared lamp panel magnification schematic;
FIG. 5 is a schematic view of the head rest and base structure;
FIG. 6 is a flow chart of a method of strabismus diagnosis;
FIG. 7 is a schematic illustration of a cover mode;
fig. 8 is a schematic diagram of various eye positions and strabismus types: (a) an orthotopic eye; (b) external strabismus or external strabismus; (c) implicit or oblique viewing; (d) upward oblique viewing or upward oblique viewing; (e) a downward-looking oblique view or downward-looking oblique view;
FIG. 9 is a flow chart of a diopter diagnostic method;
FIG. 10 is an imaging schematic;
the pupil-type digital camera comprises a 1-pupil, a 2-electronic grating component, a 3-zooming control component, a 4-optotype, a 5-infrared filter, a 6-infrared lamp panel, a 7-infrared camera, an 8-infrared lamp, a 9-fixation lamp, a 10-grating controller, an 11-grating, a 12-electromagnet, a 13-zooming lens, a 14-guide rail, a 16-support, a 17-knob, an 18-base, a 19-forehead support, a 20-chin support, a 21-screw and a 22-bevel gear.
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in fig. 1, the intelligent strabismus and diopter screening diagnosis device of this embodiment includes an optical system and a processing control unit, wherein the optical system includes a strabismus imaging optical path and a diopter imaging optical path, and the strabismus imaging optical path and the diopter imaging optical path share an infrared camera 7 and a light source, wherein the infrared camera 7 and the light source are mounted on an arc-shaped guide rail and move synchronously, and the infrared camera 7 can move to the right front of the eye for diopter detection or the light source moves to the right front of the eye for strabismus detection (the positions of the infrared camera 7 and the light source are different, then the detection items are also different). The strabismus imaging light path also comprises a sighting target 4, a grating and a sighting target switching structure.
The grating and optotype switching structure and the infrared camera 7 are designed into a movable structure and cooperatively operate with an oblique vision imaging light path and a diopter imaging light path to realize clear imaging of the infrared lamp reflecting point position on the pupil and the cornea of the human eyes with different diopters. When in strabismus inspection, the connection and the coordination of two types of vision distances and the grating are required to be ensured, and the optical zoom lens is required to meet the requirements of the system on different vision distances; during diopter detection, the imaging system and human eyes are guaranteed to achieve pupil connection, namely the fact that the entrance pupil of the optical system and the pupil of the human eyes are coaxial is met, and the fact that the optical working distance is a design value is met.
The processing control unit comprises an embedded SOC processor, a wireless communication module, a touch screen and a power supply, and achieves the functions of shooting, controlling, storing and the like of images. The embedded SOC processor is respectively connected with the wireless communication module, the touch screen, the power supply and the optical system. The embedded SOC processor has the advantages that the image processing unit is integrated inside the embedded SOC processor, the peripheral interfaces are rich, the size is small, the power consumption is low, the battery is used for supplying power, and the portability of the product is realized.
Preferably, the image acquisition of the device adopts a dual-optical system, namely, the left eye and the right eye are respectively provided with an independent image acquisition system: comprises a grating and optotype switching structure, an optotype 4, a light source and an infrared camera 7. In other words, the diagnostic device for intelligent screening of strabismus and diopter of the present embodiment is provided with a dual optical system, i.e. a set of the above optical systems is provided for each of the left and right eyes, including the above-mentioned grating and optotype switching structure, optotype 4, light source and infrared camera 7.
As shown in fig. 2 and 3, the strabismus imaging optical path specifically includes a grating and optotype switching structure, an optotype 4, a light source and an infrared camera 7, wherein the grating and optotype switching structure includes an electronic grating component 2 and a zoom control component 3, the electronic grating component 2 includes a grating controller 10 and a grating 11, the grating controller 10 is connected with an embedded SOC processor, the grating 11 can be shielded by eyes after being controlled by the grating controller 10, liquid crystal is reversed after the grating 11 is powered on during detection, and light cannot pass through to shield eyes.
The electronic grating component 2 is provided with one left eye and one right eye respectively, and the grating 11 of the left eye and the right eye is controlled to be electrified or powered off by controlling the circuit of the grating controller 10, so that alternate shielding is realized.
The zoom control assembly 3 comprises a zoom lens 13 and an electromagnet 12, the electromagnet 12 is connected with the zoom lens 13, the electromagnet 12 is connected with the embedded SOC processor, the zoom lens 13 and the electromagnet 12 realize the functions of sight simulation and switching, when the system needs to be in 33cm sight, the electromagnet 12 is not electrified, and the zoom lens 13 moves out of a strabismus imaging light path; when the system needs to have a viewing distance of 6m, the electromagnet 12 is powered on, and the zoom lens 13 moves into the oblique imaging light path.
The light source comprises an infrared lamp panel 6 and an infrared filter 5, wherein the infrared lamp panel 6 is provided with a fixation lamp 9 and a plurality of infrared lamps 8 around the fixation lamp 9, cornea reflection stray light can be effectively eliminated through an infrared annular subsection and the infrared filter 5, and interference to human eyes can be reduced.
As shown in fig. 2, the pupil 1, the grating and optotype switching structure, the optotype 4 and the light source are positioned on the same straight line and on the same horizontal line as the pupil 1, and the infrared camera 7 is positioned below the pupil 1. When strabism detection is carried out, the light source (infrared lamp) and the pupil are required to be positioned on the same horizontal line, so that the reflection point of the infrared lamp mapped to the pupil is positioned at the center position, which is the standard for comparison and judgment of strabism detection.
The zoom control assembly 3 can be matched with the optotype 4 to achieve 33cm and simulate 6m vision distance. When strabism screening is carried out, the electronic grating component 2 is controlled by the singlechip to enable light to not pass through, eyes of a tested person are shielded, the fixation lamp 9 flashes to attract the eye front vision target 4, the zoom control component 3 cuts out a light path, switches the vision distance to 33cm in cooperation with the vision target 4, the infrared lamp 8 emits infrared light to irradiate the pupil 1 through the infrared filter 5, and the infrared camera 7 below human eyes shoots under the eyes to record a change track of a reflection point position of the pupil 1 and stores the change track as a video a; after the electronic grating component 2 is controlled by the singlechip, light cannot pass through the electronic grating component to shield eyes, the fixation lamp 9 blinks to attract the eye front vision target 4, the focal length of the zoom control component 3 is 6m in cooperation with the switching of the optical path of the vision target 4, the infrared light emitted by the infrared lamp 8 irradiates the pupil 1 through the infrared filter 5, and the infrared camera 7 is positioned under the eyes of eyes to shoot and record the change track of the reflection point position of the pupil 1 and store the change track as a video b; the embedded SOC processor receives the video, decomposes the video according to frames and stores the video into image information, and the processor makes strabismus diagnosis by comparing and analyzing the change track of the reflecting point position of the infrared lamp on the pupil in the image and combining strabismus type classification.
As shown in fig. 4, the diopter imaging optical path includes an infrared camera 7, an infrared filter 5, an infrared lamp panel 6, an infrared lamp 8, a fixation lamp 9, and a guide rail 14. The infrared filter 5, the infrared lamp panel 6, the infrared lamp 8 and the fixation lamp 9 are arranged in the strabismus imaging light path and are consistent with each other, when diopter test is needed, the infrared camera 7, the infrared filter 5 and the infrared lamp panel 6 move from the A position to the B position on the guide rail 14, diopter test is required to enable the infrared camera 7 and the pupil 1 to be positioned at the same horizontal position, the infrared lamp 8 irradiates the pupil 1, the infrared camera 7 shoots an eye picture and stores the eye picture, and the diopter of human eyes is calculated by analyzing the offset of a facula array formed by facula on the pupil in the picture relative to the standard light.
As shown in fig. 5, the optical system is provided on a head rest and base structure including a bracket 16, a knob 17, a base 18, a forehead rest 19, a chin rest 20, a screw 21, and a bevel gear 22. The bracket 16 and the base 18 are vertically arranged, wherein a lifting mechanism consisting of a knob 17, a chin rest 20, a screw 21 and a bevel gear 22 is arranged on the bracket 16, the knob 17 is rotated, and the screw 21 is driven to rotate by the bevel gear 22, so that the chin rest 20 can move up and down.
The intelligent strabismus and diopter screening diagnosis device of the embodiment performs strabismus diagnosis, and the method is as follows:
an alternate covering method and a cornea mapping method are used for detecting whether invisible strabismus exists or not and intermittent strabismus. And respectively recording videos of targets watched by a tested person in different coverage modes and under 33cm and 6m vision distances, extracting each frame of image in the videos, and obtaining the position information and the movement direction of the eye positions of the eyeballs for diagnosis by analyzing the position change information of the reflecting points on the pupils in the images and combining the coverage modes, the vision distances and the pupil position change information to obtain diagnosis results.
Specific test description: the right eye of the tested person looks at the sighting target 4, the electronic grating component 2 is electrified to cover the left eye, then the electronic grating component is opened quickly, and then the right eye is covered, so that the left eye looks at the sighting target 4, the electronic grating component repeatedly and alternately covers the electronic grating component for several times, and after video recording, the position change information of the reflecting point on the image analysis pupil 1 is extracted, and the position change information of the covering mode, the sight distance and the pupil is combined to judge whether the position of the covering eye is changed or not. If the eyes do not move, the eyes are right; if there is a change in the position of the uncovered eye, a strabismus is indicated. The eye position returns to the center after moving and is hidden strabismus. The eyes can not return to the center after movement, and the eye is a dominant strabismus. Analyzing the movement direction of the eye position: if the eyeball moves from outside to center, the eyeball is in external strabismus or external strabismus; if the eyeball moves from the inside to the center, the eyeball is in a concealed strabismus or an strabismus; if the eyeball moves from top to center, the eyeball is in upward strabismus or upward strabismus; if the eyeball moves from the lower part to the center, the eyeball is in a lower strabismus or a lower strabismus.
The device can also analyze and diagnose a specific strabismus angle by collecting the relative position relation between the reflecting point position and the pupil center, and realize the digital diagnosis of the strabismus angle.
The intelligent strabismus and diopter screening diagnosis device of the embodiment performs diopter diagnosis, and the method is as follows:
the light source emits infrared light, the infrared light and the camera are synchronously triggered, a gray image of the infrared light source of the tested person projected on the retina is obtained, the image is analyzed, the brightness information of the light spots on the retina in the image is obtained, the diopter of the human eye is calculated according to the brightness, the position and the area of the light spots on the image, and diagnosis is carried out, so that a diagnosis result is obtained.
The refraction of eyes of normal people is not abnormal, and infrared light emitted by the light source is projected and focused on retina; the front and back axes of the eye ball of the myopia are lengthened, the cornea becomes convex, and the light is focused in front of the retina; the infrared lamp emits light and simultaneously photographs the eyes, then the images are analyzed, and diopter is calculated. Distance of infrared light source to camera = r+2l, where r is the distance of the human eye to the light source.
The system establishes the 3D model data of the human face through the images acquired by the double lenses, compares the 3D model data with the images acquired by the single lenses, can obtain the accurate data of the distance from the human eyes to the forehead plane and the interpupillary distance of the human eyes, and improves the calculation accuracy of diopter.
The foregoing is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the claims of the present invention.
Claims (5)
1. The device comprises an optical system and a processing control unit, and is characterized in that the optical system comprises a strabismus imaging optical path and a diopter imaging optical path, the strabismus imaging optical path and the diopter imaging optical path share an infrared camera and a light source, the light source comprises a light source body and a light filter arranged in front of the light source body, the infrared camera and the light source are arranged on an arc-shaped guide rail and synchronously move, the infrared camera moves to the right front of an eye to perform diopter detection or the light source moves to the right front of the eye to perform strabismus detection, the strabismus imaging optical path further comprises a optotype and a grating and optotype switching structure, the optotype is uniquely and fixedly arranged between the grating and the optotype switching structure and the light source, and the grating and the optotype switching structure can intelligently complete eye shielding and optotype switching without additional manual operation;
the processing control unit comprises an SOC processor, a wireless communication module, a touch screen and a power supply, wherein the SOC processor is respectively connected with the wireless communication module, the touch screen, the power supply and the optical system, and the SOC processor acquires and stores detection data and intelligently analyzes the data to obtain a diagnosis result;
the light source body comprises a fixation lamp and a plurality of infrared lamps arranged around the fixation lamp, and the fixation lamp and the plurality of infrared lamps are arranged on the same lamp panel;
the infrared lamp emits infrared rays, the infrared rays irradiate the pupils through the optical filter, the infrared camera below the eyes of a person shoots and records the change track of the reflecting point positions of the pupils under different vision distances to be stored as video, and the processor makes strabismus diagnosis by comparing and analyzing the change track of the reflecting point positions of the infrared lamp on the pupils in the image;
diopter detection requires that the infrared camera and the pupil are positioned at the same horizontal position, the infrared lamp irradiates the pupil, the infrared camera shoots an eye picture and stores the eye picture, and the diopter of human eyes is calculated by analyzing the offset of a light spot array formed by light spots on the pupil in the picture relative to the standard light.
2. The intelligent strabismus and diopter screening diagnostic device of claim 1, wherein the grating and optotype switching structure comprises an electronic grating assembly, the electronic grating assembly comprises a grating controller and a grating, the grating controller is connected with the SOC processor, liquid crystal inversion occurs after the grating is controlled by the grating controller, and light cannot pass through so as to shield eyes.
3. The intelligent strabismus and diopter screening diagnostic device according to claim 1 or 2, wherein the grating and optotype switching structure comprises a zoom control component, the zoom control component can achieve 33cm and simulate 6m vision distance in cooperation with the optotype, the zoom control component comprises a zoom lens and an electromagnet which are connected with each other, the electromagnet is connected with the SOC processor, and whether the electromagnet is electrified or not can drive the zoom lens to move into or out of the strabismus imaging optical path, so that the vision distance switching function is achieved.
4. A diagnostic device for intelligent screening of strabismus and diopters according to claim 3, wherein said device is provided with dual optical systems, one set of said optical systems being provided for each of the left and right eyes.
5. A diagnostic device for intelligent screening of strabismus and diopter according to claim 3, wherein the device is further provided with a head rest and base structure comprising a bracket, a knob, a base, a forehead rest, a chin rest, a screw and a bevel gear, wherein the bracket and the base are vertically arranged, wherein the knob, the chin rest, the screw and the bevel gear form a lifting mechanism arranged on the bracket, the knob is rotated, and the screw is driven to rotate by the bevel gear, so that the chin rest can move up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910650095.4A CN110251073B (en) | 2019-07-18 | 2019-07-18 | Diagnostic device for intelligently screening strabismus and diopter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910650095.4A CN110251073B (en) | 2019-07-18 | 2019-07-18 | Diagnostic device for intelligently screening strabismus and diopter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110251073A CN110251073A (en) | 2019-09-20 |
| CN110251073B true CN110251073B (en) | 2024-01-30 |
Family
ID=67927042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910650095.4A Active CN110251073B (en) | 2019-07-18 | 2019-07-18 | Diagnostic device for intelligently screening strabismus and diopter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110251073B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111110183A (en) * | 2019-12-17 | 2020-05-08 | 温州医科大学 | Binocular optical coherence automatic focusing imaging device and working method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02185228A (en) * | 1989-01-11 | 1990-07-19 | Canon Inc | Eye refracting power meter |
| CN1813624A (en) * | 2006-02-16 | 2006-08-09 | 赵阳 | Strabism measuring instrument and its method for measuring strabism |
| CN104287691A (en) * | 2013-07-17 | 2015-01-21 | 河南省安耐德电力设备有限公司 | Computer optometry unit |
| CN104490359A (en) * | 2015-01-19 | 2015-04-08 | 天津市索维电子技术有限公司 | Portable device for generally surveying eyesight of children |
| CN106580244A (en) * | 2016-11-22 | 2017-04-26 | 上海美沃精密仪器股份有限公司 | Portable infrared eccentric photorefraction system |
| CN107184178A (en) * | 2017-06-26 | 2017-09-22 | 廖亮举 | A kind of hand-held vision drop instrument of intelligent portable and optometry method |
| CN107890336A (en) * | 2017-12-05 | 2018-04-10 | 中南大学 | Diopter detecting system based on intelligent handheld device |
| CN109288493A (en) * | 2017-07-25 | 2019-02-01 | 珠海学院有限公司 | A kind of digitlization strabismus diagnostic method, device and system |
-
2019
- 2019-07-18 CN CN201910650095.4A patent/CN110251073B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02185228A (en) * | 1989-01-11 | 1990-07-19 | Canon Inc | Eye refracting power meter |
| CN1813624A (en) * | 2006-02-16 | 2006-08-09 | 赵阳 | Strabism measuring instrument and its method for measuring strabism |
| CN104287691A (en) * | 2013-07-17 | 2015-01-21 | 河南省安耐德电力设备有限公司 | Computer optometry unit |
| CN104490359A (en) * | 2015-01-19 | 2015-04-08 | 天津市索维电子技术有限公司 | Portable device for generally surveying eyesight of children |
| CN106580244A (en) * | 2016-11-22 | 2017-04-26 | 上海美沃精密仪器股份有限公司 | Portable infrared eccentric photorefraction system |
| CN107184178A (en) * | 2017-06-26 | 2017-09-22 | 廖亮举 | A kind of hand-held vision drop instrument of intelligent portable and optometry method |
| CN109288493A (en) * | 2017-07-25 | 2019-02-01 | 珠海学院有限公司 | A kind of digitlization strabismus diagnostic method, device and system |
| CN107890336A (en) * | 2017-12-05 | 2018-04-10 | 中南大学 | Diopter detecting system based on intelligent handheld device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110251073A (en) | 2019-09-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8708490B2 (en) | Method and a device for automatically measuring at least one refractive characteristic of both eyes of an individual | |
| CN114222520A (en) | Ophthalmic testing system and method | |
| JP4988874B2 (en) | Multifunctional ophthalmic examination device | |
| US12016631B2 (en) | System and method for visualization of ocular anatomy | |
| CN107184178A (en) | A kind of hand-held vision drop instrument of intelligent portable and optometry method | |
| WO2021135557A1 (en) | Artificial intelligence multi-mode imaging analysis apparatus | |
| JPH06509486A (en) | Gaze tracking for visual field analyzer | |
| CN105433899A (en) | Pupil detection device | |
| CN101190120A (en) | Binocular pupil detecting system | |
| CN109288493A (en) | A kind of digitlization strabismus diagnostic method, device and system | |
| CN105520713A (en) | Binocular pupil light reflex measuring equipment | |
| CN104427924A (en) | Device and method for measuring at least one objective ocular refraction characteristic of a patient for a plurality of visual ranges | |
| CN110251073B (en) | Diagnostic device for intelligently screening strabismus and diopter | |
| CN107898429A (en) | One kind strabismus examination and eye position recorder and its method | |
| CN210810960U (en) | Diagnostic device of intelligent screening strabismus and diopter | |
| US20220076417A1 (en) | Vision screening systems and methods | |
| GB2332271A (en) | Automated assessment of strabismus patients | |
| US20240049963A1 (en) | Cover-Uncover Test in a VR/AR Headset | |
| CN101601577A (en) | A kind of electronic diopsimeter with eye tracking and refraction compensation function | |
| CN210043977U (en) | Heterophoria detection system | |
| TWI720353B (en) | Fundus camera and method for self-shooting fundus | |
| CN213046831U (en) | Eyeball motion testing device | |
| CN209826666U (en) | Non-contact type perimeter based on feedback interaction of display equipment | |
| CN210330543U (en) | VR visual function inspection device | |
| CN109875495A (en) | It is a kind of by display equipment the contactless full-automatic feedback visual field based on |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |