Ishihara plate
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English[edit]
Etymology[edit]
Designed by Dr. Shinobu Ishihara at the University of Tokyo, who first published his tests in 1917.
Noun[edit]
Ishihara plate (plural Ishihara plates)
- 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.