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The Ishihara test is a color vision test for detection of red–green color deficiencies. It was named after its designer, Shinobu Ishihara, a professor at the University of Tokyo, who first published his tests in 1917. [2] The test consists of a number of Ishihara plates, which are a type of pseudoisochromatic plate.
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An Ishihara test image as seen by subjects with normal color vision and by those with a variety of color deficiencies. A pseudoisochromatic plate (from Greek pseudo, meaning "false", iso, meaning "same" and chromo, meaning "color"), often abbreviated as PIP, is a style of standard exemplified by the Ishihara test, generally used for screening of color vision defects.
The City University test (also known as TCU test [1] or CU test [2]) is a color vision test used to detect color vision deficiency. Unlike commonly used Ishihara test , City University test can be used to detect all types of color vision defects.
Shinobu Ishihara (石原 忍, Ishihara Shinobu, September 25, 1879 – January 3, 1963) was a Japanese ophthalmologist who created the Ishihara color test to detect colour blindness. He was an army surgeon .
The link was discussed at Talk:Color blindness/Archive 2#please test it with mixed results. The link was reinserted by an IP in this edit in 2008. The link has been around for 8 years. There was no discussion on the Ishihara test talk page. Even if we concede the two editors who added the link are the author, that is not necessarily bad.
The Krimsky test is essentially the Hirschberg test, but with prisms employed to quantitate deviation of ocular misalignment by determining how much prism is required to centre the reflex. [2] The Krimsky test is advisably used for patients with tropias, but not with phorias.
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