Ishihara test

American  

[ish-ee-hahr-uh test] / ˌɪʃ iˈhɑr ə ˌtɛst /

Also Ishihara's test

noun

Ophthalmology.

1. 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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Etymology

Origin of Ishihara test

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