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2017 Word of the Year

Ishihara test

or Ishihara's test

[ish-ee-hahr-uh or ish-ee-hahr-uh z] /ˌɪʃ iˈhɑr ə or ˌɪʃ iˈhɑr əz/
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.
Origin of Ishihara test
1920-1925
1920-25; named after S. Ishihara (1879-1963), Japanese eye specialist, who devised it
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Ishihara test in Medicine

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