Ishihara test

Also Ish·i·ha·ra's test

[ish-ee-hahr-uh test]

Phonetic (Standard)IPA

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.

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

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