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WordReference Random House Unabridged Dictionary of American English © 2024Ish•i•ha′ra test′ (ish′ē här′ə),USA pronunciation [Ophthalm.]- Ophthalmologya 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, Ishiha′ra's test′. - named after south, southern. Ishihara (1879–1963), Japanese eye specialist, who devised it 1920–25
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