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Color pattern VECPs in optic neuritis Naoya Fujimoto 1 , Emiko Adachi-Usami 1 , Yonetsugu Kakisu 1 1Dept of Ophthalmol, Sch of Med, Chiba Univ pp.1085-1088
Published Date 1989/7/15
DOI https://doi.org/10.11477/mf.1410210873
  • Abstract
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We recorded the visually evoked cortical potentials (VECPs) in 3 cases with optic neuritis and acquired color vision defects. We used a color pattern gener-ator displayed on a color visual display terminal developed by Adachi-Usami. We employed 4 kinds of stimuli as displayed on the TV monitor: a black -and-white chackerboard and two opponent color checks along the confusion lines for protan, deutan and tritan. They were named respectively, as black -and white, protan, deutan and tritan stimulus.

The latency and amplitude of p 100 component were measured. Normal subjects showed a latency of less than 120 msec for either of the four stimulus conditions. A case with subjective red-green defectsmanifested more attenuated response to protan and deutan stimuli than tritan stimulus. Another case with subjective blue-yellow defects showed a reduced response to tritan stimulus than protan or deutan one. A third case with acquired red-green defects in the right eye associated with deuter-anomaly in both eyes showed more disturbed response to protan and deutan stimuli in the right than in the left eye.

Use of color pattern VECPs thus enabled detec-tion of acquired red-green and blue-yellow defects. It was also helpful in differentiating acquired red -green defects from congenital ones.


Copyright © 1989, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1308 印刷版ISSN 0370-5579 医学書院

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