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What Colors Does a Colorblind Person See?
About one in every 12 males and one in every 200 females suffer from some form of colorblindness. But there are many different kinds of colorblindness.
In one common form, a person cannot tell the difference between yellow and pale green. In another common form, a person cannot tell red and green apart. These colors both appear as a kind of gray.
Some people are totally colorblind. To them, all colors appear as shades of black and white.