Ishihara's Tests for Colour Blindness

A series of plates that provide an 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. This work also provides a brief guide to use and interpretation.

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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. In this 10 plate edition simple geometric shapes takes the place of numerals for use with infants and unlettered people.