What is color blindness, the condition in which a person cannot distinguish certain colors, usually between green and red, sometimes between blue and other colors.
Călin Nicolescu
Health
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The main cause is the absence or dysfunction of the cone cells in the retina that detect color. Symptoms include difficulty distinguishing certain colors or inability to perceive their brightness correctly. Treatment for congenital color blindness is limited, but there are special glasses that can improve color perception.
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