Ishihara plate

English dictionary entry

Meanings

noun
  1. Any of a set of colored plates each containing a pattern of dots of various colors and sizes, forming a number or shape clearly visible to those with normal color vision; used in testing for color blindness.

Word forms

Ishihara plate Ishihara plates

Etymology

Designed by Dr. Shinobu Ishihara at the University of Tokyo, who first published his tests in 1917.

Related words

This entry uses open data from Wiktionary (CC BY-SA/GFDL). Word forms are used for search and are not indexed as separate pages.