This Ishihara Test Chart Book for Color Blindness is a simple, accurate method for discovering congenital color blindness of two types: total color blindness and red-green blindness, each in two forms, complete and incomplete. It includes fourteen special plates for tests to determine the kind and degree of defect in color vision.
- 14 colour plates encased in specially-designed album-type book for ease of handling
- Includes 4 special plates for tests to determine the type and degree of defect in colour vision
- Detailed instructions included
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