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

Ishihara, Shinobu

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

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.

Image Details

Artist
 
Image Ref.
 
10459515

© Science Museum / Science & Society Picture Library

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