Eight Ishihara charts for testing colour blindness, Europe, 1917-1959

Made:
1917-1959 in Europe
maker:
Unknown

Buy this image as a print 

License this image for commercial use at Science and Society Picture Library

Buy this image as a print 

License this image for commercial use at Science and Society Picture Library

Buy this image as a print 

License this image for commercial use at Science and Society Picture Library

Buy this image as a print 

License this image for commercial use at Science and Society Picture Library

Buy this image as a print 

License this image for commercial use at Science and Society Picture Library

Buy this image as a print 

License this image for commercial use at Science and Society Picture Library

Buy this image as a print 

License this image for commercial use at Science and Society Picture Library

Buy this image as a print 

License this image for commercial use at Science and Society Picture Library

Buy this image as a print 

License this image for commercial use at Science and Society Picture Library

Buy this image as a print 

License this image for commercial use at Science and Society Picture Library

Buy this image as a print 

License this image for commercial use at Science and Society Picture Library

One off 8 Ishihara Charts for testing colour-blindness. Colour blindness is tested using these eight placards. They
Science Museum Group Collection
© The Board of Trustees of the Science Museum

One off 8 Ishihara Charts for testing colour-blindness. Colour blindness is tested using these eight placards. They
Science Museum Group Collection
© The Board of Trustees of the Science Museum

One off 8 Ishihara Charts for testing colour-blindness. Colour blindness is tested using these eight placards. They
Science Museum Group Collection
© The Board of Trustees of the Science Museum

One off 8 Ishihara Charts for testing colour-blindness. Colour blindness is tested using these eight placards. They
Science Museum Group Collection
© The Board of Trustees of the Science Museum

One off 8 Ishihara Charts for testing colour-blindness. Colour blindness is tested using these eight placards. They
Science Museum Group Collection
© The Board of Trustees of the Science Museum

One off 8 Ishihara Charts for testing colour-blindness. Colour blindness is tested using these eight placards. They
Science Museum Group Collection
© The Board of Trustees of the Science Museum

One off 8 Ishihara Charts for testing colour-blindness. Colour blindness is tested using these eight placards. They
Science Museum Group Collection
© The Board of Trustees of the Science Museum

One off 8 Ishihara Charts for testing colour-blindness. Colour blindness is tested using these eight placards. They
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Set of 8 Ishihara Charts for testing colour-blindness.

Colour blindness is tested using these eight placards. They are known as Ishihara charts. They are named after their inventor, Japanese ophthalmologist Shinobu Ishihara (1897–1963). Each image consists of closely packed coloured dots and a number. The patient must identify the number or image he or she can see. The type of colour blindness a patient has is identified using the range of charts.

There are several types of colour blindness. These range in severity. In dichromatism, there is difficulty seeing one of the three primary colours: red, blue or green. In anomalous trichomatsis, there is reduced sensitivity to certain colours. In the rarer monochromatism, there is no colour vision and the world is seen in white, black and grey shades. Ishihara devised his test in 1917. It is still used.

Related people

Details

Category:
Ophthalmology
Object Number:
1959-257
type:
colour blindness test
credit:
Keeler, C.H.

Cite this page

Rights

We encourage the use and reuse of our collection data.


Data in the title, made, maker and details fields are released under Creative Commons Zero


Descriptions and all other text content are licensed under a Creative Commons Attribution 4.0 licence

Using our data

Download

Download catalogue entry as json

Download manifest IIIF

Our records are constantly being enhanced and improved, but please note that we cannot guarantee the accuracy of any information shown on this website.