Ishihara Book 14 Plates
- Ishihara Book is recognized internationally as highly reliable method of determining color deficiency Accepted by leading authorities as a simple and accurate method for discovering congenital color blindness and red-green blindness, each in two forms, complete and incomplete.
- With normal color perception, the images and numbers will all be visible.
- Each color test plate in this hard bound.
- Ishihara book consists of a number of colored plates to provide color blindness test, on each plate is printed a circle made of many different sized dots of slightly different colors, spread in a random manner.
- Within the dot pattern, and differentiated only by color, is a number or shape.
- What or even if, a number is visible indicates if and what form of color blindness the viewer has It is Most Popular and efficient test for red/green color vision deficiency Quickly differentiates between congenital and acquired defects
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