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Ishihara Test Chart Books, for Color Deficiency, 10 Plate (Unlettered Persons and Children)
Ishihara Test Chart Books, for Color Deficiency, 10 Plate (Unlettered Persons and Children)
 
Price: $169.00
Manufacturer: Graham Field


Product Code: 1257
Qty:

Description
 
  • 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.
  • Color plates encased in specially designed album-type books for ease of handling.
  • Detailed instructions included.

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