How Do Blue and Green Eyes Exist When Those Pigments Are Not Found in the Human Eye?

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Genre: Education

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Today I Found Out

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Shared October 17, 2019

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In this video:

Eye color is a function of pigmentation both at the back of the iris (iris pigment epithelium) and in its stroma (the front of the iris), as well as the density of the cells in the stroma. In most cases these factors, and hence eye color, are determined by genetics with potentially as many as 15 different genes identified to date seeming to affect the ultimate coloring in some way.

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