AVS Forum Special Member
Join Date: Nov 2003
Location: Sharply focused on sharper focus.
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I aced it. But I took my time at it.
Color vision is interesting in that it's variable from one person to the next.
Women (practically) always have full acuity in the red range of the spectrum, and can differentiate small differences in shades of red. That's why there are so many shades of lipstick for them to choose from.
But men, well, the genes that determine the red range color acuity of a man's eyes can combine in one of 44 ways (autosomes) and some of them have different effects on color vision than others. The best case scenario gives a man equal red acuity with women. Some men have reduced ability to discriminate between shades of red, and
to them, that counter full of different shades of lipsticks may look like multiple examples of just a few shades.