Aid for color vision deficiencies

Details Aid for color vision deficiencies Aid for color vision deficiencies

1994-12-21

1996-11-12

Mai, Huy

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

With antiglare or shading

359581, G02C 710, G02B 110

Patent

active

055745172

ABSTRACT:
A visual aid for individuals with color vision deficiencies comprises a pair of optical elements shaped to be placed in front of an individual's eyes. An interference coating is applied to one surface of each element, preferably the back surface. The interference coating comprises a stack of dielectric film of selected structure. The stack of interference films is structured to give the optical elements pre-selected spectral transmission curves. An anti-reflection coating may be applied to the front surface of each element.

REFERENCES:
patent: 4896928 (1990-01-01), Perilloux et al.
patent: 5009486 (1991-04-01), Dobrowolski et al.
patent: 5083858 (1992-01-01), Girerd
"Visual Aids for Correction of Red-Green Colour Vision Deficiencies", Can J Optom 1976; 38:38-46, Ingeborg Schmidt.
"Effect of X-Chrom Lens Wear on Chromatic Discrimation and Steropsis in Color-Deficient Observers", vol. 60, No. 4, pp. 297-302, 1983 American Journal of Optometry & Physiological Optics, Ellen R. Matsumoto, Chris A. Johnson and Robert B. Post.
"The X-Chrom Lens. On Seeing Red", vol. 25, No. 5, Mar.-Apr. 1981, Survey of Opthalmology, Irwin M. Siegel, Ph.D.
"An Experimental Test of Filter-Aided Dichromatic Color Discrimination", vol. 61, No. 4, pp. 256-264, Apr. 1984, Stuart Richer, Anthony J. Adams, American Journal of Optometry & Physiological Optics.

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