There are some evolutionary advantages to red-green colorblindness. People with red-green color blindness can differentiate between much more shades of khaki than unaffected people. This might help detecting camouflaged food in a green environment [1]. Color vision deficient people have a tendency to have better night vision and, in some situations, they can perceive variations in luminosity that color-sighted people could not [2]. However, it’s important to note that colorblindness can also cause difficulties in everyday life [3].
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