Home Home Diagnostic Vision Tests

Colour Vision Chart Ishihara Book 24 plate

GE0097

EACH
NZ $390.14
 IN STOCK

Overview

Colour Vision Chart Ishihara Book

Ishihara Test Chart Books for Color Deficiency are 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.

Helps determines 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 such as using the more popular 24 plate test.

Questions?

In order to assist us in reducing spam, please type the characters you see: