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Ishihara Test 24 Plate Book

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Price: $235.00
Item Number: ISH-CLRT-24
Manufacturer: LPO
Ishihara® Test Chart Books, for 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.
  • Includes four special plates for tests to determine the kind and degree of defect in color vision.
  • Makes use of the peculiarity that in red-green blindness, blue and yellow appear remarkably bright compared with red and green.
  • Consist of a number of colored plates.
  • 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.
  • What, or even if, a number is visible indicates if and what form of color blindness the viewer has.
  • The full test consists of thirty-eight plates, but the existence of a deficiency may be clear after fewer plates.
  • The Ishihara Color charts are accepted by leading authorities worldwide as a simple and accurate test method.
  • Color plates encased in specially designed album-type books for ease of handling.
  • Detailed instructions included.