Ishihara test

[ ish-ee-hahr-uh-test ]
/ ˌɪʃ iˈhɑr ə ˌtɛst /
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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.
In effect, this quiz will prove whether or not you have the skills to know the difference between “affect” and “effect.”
Question 1 of 7
The rainy weather could not ________ my elated spirits on my graduation day.
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Also Ish·i·ha·ra's test [ish-ee-hahr-uhz test] /ˌɪʃ iˈhɑr əz ˌtɛst/ .

Origin of Ishihara test

1920–25; named after S. Ishihara (1879–1963), Japanese eye specialist, who devised it
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

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Medical definitions for Ishihara test

Ishihara test
[ ĭsh′ĭ-härə ]

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 Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.