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Meaning of Ishihara test

Ish•i•ha'ra test"

Pronunciation: (ish"ē-här'u), [key]
— Ophthalm. Ophthalm.
  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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.