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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 3, Iss. 7 — Jul. 10, 2005
  • pp: 432–434

An objective method for color vision deficiencies measurement based on visual evoked potential

Kai Xiong, Minxian Hou, and Guanrong Ye  »View Author Affiliations


Chinese Optics Letters, Vol. 3, Issue 7, pp. 432-434 (2005)


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Abstract

The equi-luminance of color stimulus in normal subjects is characterized by L-cone and M-cone activation in retina. For the protanopes and deuternopes, only the activations of one relevant remaining cone type should be considered. The equi-luminance turning curve was established for the recorded visual evoked potentials (VEPs) of the luminance changes of the red and green color stimulus, and the position of the equi-luminance was used to define the kind and degree of color vision deficiencies. In the test of 47 volunteers we got the VEP traces and the equi-luminance turning curves, which was in accordance with the judgment by the pseudoisochromatic plate used in clinic. The method fulfills the objective and quantitative requirements in color vision deficiencies test.

© 2005 Chinese Optics Letters

OCIS Codes
(170.4460) Medical optics and biotechnology : Ophthalmic optics and devices
(330.1720) Vision, color, and visual optics : Color vision
(330.5310) Vision, color, and visual optics : Vision - photoreceptors

Citation
Kai Xiong, Minxian Hou, and Guanrong Ye, "An objective method for color vision deficiencies measurement based on visual evoked potential," Chin. Opt. Lett. 3, 432-434 (2005)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-3-7-432

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