inability or decreased ability to see colour, or perceive colour differences, under normal lighting conditions
Color blindness is an inability or reduced ability to see colors or notice differences between colors in normal light. It matters because it can affect how people navigate everyday situations like reading traffic lights, distinguishing colors in their work, or enjoying visual experiences the way others do.
AI-generated from the Wikipedia summary — may contain errors.
via PubMed
Color blindness or color vision deficiency (CVD) is the decreased ability to see color, differences in color, or distinguish shades of color. The severity of color blindness ranges from mostly unnoticeable to full absence of color perception.
Color blindness is usually a sex-linked inherited problem or variation in the functionality of one or more of the three classes of cone cells in the retina, which mediate color vision. The most common form is caused by a genetic condition called congenital red–green color blindness (including protan and deutan types), which affects up to 1 in 12 males (8%) and 1 in 200 females (0.5%). The condition is more prevalent in males because the opsin genes responsible are located on the X chromosome. Rarer genetic conditions causing color blindness include congenital blue–yellow color blindness (tritan type), blue cone monochromacy, and achromatopsia. Color blindness can also result from physical or chemical damage to the eye, the optic nerve, parts of the brain, or from medication toxicity. Color vision also naturally degrades in old age.
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