An Ishihara Chart for testing colour-blindness, c 1959.
4 0 c m
 
40cm
actual image size: 32cm x 32cm

An Ishihara Chart for testing colour-blindness, c 1959.

Ishihara, Shinobu

© Science Museum / Science & Society Picture Library

Description

Most colour blindness is inherited, and affects more men than women. Colour blindness usually involves confusion between red, green and yellow. Dr Shinobu Ishihara, Professor Emeritus of the University of Tokyo, Japan, designed this series of plates as a test for colour blindness. The test involves the patient being able to distinguish a number within the coloured field at the centre of each chart.
 

Artist

 

Image Ref.

10459516
 

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