Definition of Ishihara test in English:

Ishihara test

Line breaks: Ishi|hara test
Pronunciation: /ɪʃɪˈhɑːrə


A test for colour blindness in which the subject is asked to distinguish numbers or pathways printed in coloured spots on a background of spots of a different colour or colours.
More example sentences
  • These tests are sometimes known as the Ishihara test.
  • Patients should have baseline visual acuity testing and testing of color discrimination (Ishihara tests).
  • Testing of visual acuity and color vision (Ishihara tests) should be performed when EMB is to be used.


early 20th century: named after Shinobu Ishihara (1879–1963), Japanese ophthalmologist.

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rich in, covered with, or producing oil; oily