Ishihara test

noun

Medical Definition of Ishihara test

: a widely used test for color blindness that consists of a set of plates covered with colored dots which the test subject views in order to find a number composed of dots of one color which a person with various defects of color vision will confuse with surrounding dots of color

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“Ishihara test.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Ishihara%20test. Accessed 28 Sep. 2020.

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