Ishihara's Tests for Colour Deficiency

These series of plates provide a quick and accurate assessment of congenital, the most common form, of colour blindness. They distinguish between total colour blindness and strong and mild forms of both protan and deutan deficiency. A brief guide to use and interpretation is provided. Used principal [...]
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These series of plates provide a quick and accurate assessment of congenital, the most common form, of colour blindness. They distinguish between total colour blindness and strong and mild forms of both protan and deutan deficiency. A brief guide to use and interpretation is provided. Used principally by ophthalmologists for a complete classification.