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  • Title: [Panel D-15 test under reduced illumination for persons with color vision defects].
    Author: Kudo H.
    Journal: Nippon Ganka Gakkai Zasshi; 1995 Mar; 99(3):371-5. PubMed ID: 7732931.
    Abstract:
    We evaluated the panel D-15 test under reduced illumination in subjects with color vision deficiency and in normal subjects. Forty subjects with color vision deficiency (3 protanopes, 10 protanomalies, 10 deuteranopes, 7 extreme deuteranomalies and 10 deuteranomalies) and 10 normal subjects were the subjects for the experiment. Seven light levels ranging from 0.9 to 900 lux were used. All normal subjects passed the test at 3.5 lux or more and 30% failed at 0.9 lux. Color vision defective subjects began to fail the test at 225 lux, with 56% failing at 3.5 lux and 92% at 0.9 lux. The performance on the panel D-15 test decreased in proportion to decreasing the illumination in some color vision defective subjects. Some protanomalous subjects showed a deutan pattern at low illumination levels.
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