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•Summary: The test based on the Ishihara plates, is designed to give a quick assessment of color vision, and should not replace evaluation by a professional!
The test based on the Ishihara plates, is designed to give a quick assessment of color vision, and should not replace evaluation by a professional!
Color vision deficiency seems to occur in about 8% - 12% of the males of European origin and about one-half of 1% of females. Total CVD (seeing in only shades of gray) is extremely rare.