An adaptative visual device to assist patients affected by visual scotoma
Pages 276 - 279
Abstract
The presence of a central visual scotoma disrupts recognition and any visual identification. The current visual apparatus (lens) obliges the patient to develop a new referential visual to investigate differently the visual information but regrettably they are not very successful. In this project, we elaborated an innovative adaptive optical device. Adaptive, because it is no longer the patient who has to adapt himself to his handicap but the device which is going to adapt its environment to his visual needs in real time. We suggest synchronizing eye movement and availability of the visual information by unmasking the visual information present under the scotoma. Our result shows that the subject is disrupted during the reading with the presence of the scotoma when more than 6 letters are masked. Beyond, we improve significantly the speed of reading according to the unmasking principle.A new proposal for the unmasking of information by respecting the cognitive and linguistic cues of the text is the object of the continuity of this project.
References
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{2} Fine, E.M., Hazel, C.A., Petre, K.L. & Rubin, G.S. Are the benefits of sentence context different in central and peripheral vision? Optom Vis Sci 76(11): 764-9, (1999).
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{3} Fine, E.M., Kirschen, M.P. & Peli, E. The necessary field of view to read with an optimal stand magnifier. J Am Optom Assoc 67(7): 382-9, (1996).
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{4} Fine, E.M. & Rubin, G.S. Reading with central field loss: number of letters masked is more important than the size of the mask in degrees. Vision Res 39(4): 747-56, (1999).
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{5} Kennedy, A., Radach Ralph, Heller D. Reading as a Perceptual Process. Ed.Norh-Holland. (2000).
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{6} Legge, G.E., Ross, J.A., Isenberg, L.M. & LaMay, J.M. Psychophysics of reading. Clinical predictors of low-vision reading speed. Invest Ophthalmol Vis Sci 33(3): 677-87, (1992).
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{7} Legge, G.E., Mansfield. J.S XX. Linking letter recognition to reading speed in central and peripheral vision. Vision research 33(3): 677-87, (2001).
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Index Terms
- An adaptative visual device to assist patients affected by visual scotoma
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Published In
November 2003
313 pages
ISBN:1581138032
DOI:10.1145/1063669
- Conference Chair:
- Khaldoun Zreik,
- Editor:
- Thomas Baudel,
- Program Chairs:
- Christophe Kolski,
- Eric Brangier
Copyright © 2003 ACM.
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New York, NY, United States
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Published: 25 November 2003
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