Jisho

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しきかくいじょう 色覚異常
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Noun
1. color-vision deficiency; colour-vision deficiency; color-blindness; colour-blindness​
Wikipedia definition
2. Color blindness​Color blindness or color vision deficiency is the inability or decreased ability to see color, or perceive color differences, under normal lighting conditions. Color blindness affects many people in a population. "Color blind" is a term of art; there is no actual blindness but there is a fault in the development of one or more sets of retinal cones that perceive color in light and transmit that information to the optic nerve. Color blindness is usually a sex-linked condition.
Read “Color blindness” on English Wikipedia
Read “色覚異常” on Japanese Wikipedia
Read “Color blindness” on DBpedia

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