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A member asked:
Why is there more than one type of colour for eyes?
4 doctors weighed in across 2 answers
Multifactorial: The basic color for the iris and eyes is brown. Depending on genetics and light refracting through the eyes we get a spectrum of colors. It is a complex multifactorial process. Your quesiton has be seeing colors! google it! it is a very interesting biological process.
Answered 12/2/2011
6.2k views
Iris Pigmentation: The more the iris is pigmented, the darker the eye color. Blue eyes have very little pigment whereas brown have the most.
Answered 12/14/2014
6.1k views
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