Ishihara test

Ishihara test

[ish-ee-hahr-uh]
noun Ophthalmology.
a test for determining color blindness by means of a series of cards each having colored dots that form one pattern to the normal eye and a different pattern to the eye that is color-blind.
Also, Ishihara's test.


Origin:
1920–25; named after S. Ishihara (1879–1963), Japanese eye specialist, who devised it

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Medical Dictionary

Ishihara test Ish·i·ha·ra test (ĭsh'ĭ-hä'rə)
n.
A test for color-vision deficiency employing a series of plates on which numbers or letters are printed in dots of primary colors surrounded by dots of other colors; the figures are discernible by individuals with normal color vision.

The American Heritage® Stedman's Medical Dictionary
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