Definition of Ishihara test in English:

Ishihara test

Syllabification: Ish·i·ha·ra test
Pronunciation: /ˌiSHēˈhärə ˌtest


  • A test for color-blindness in which the subject is asked to distinguish numbers or pathways printed in colored spots on a background of spots of a different color or colors.
    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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Pronunciation: skəʊʃ
a small amount; a little