Iris (anatomy) - Wikipedia
Fascinating and Unusual Facts About Green Eye Color - Owlcation
I just read that grey eyes are extremely rare and only 3% of people have them. Is this true? Hands up who has grey eyes! - Quora
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I just read that grey eyes are extremely rare and only 3% of people have them. Is this true? Hands up who has grey eyes! - Quora
Rarest Eye Color: What it Is and Why
What colour are my eyes? My brother keeps saying they're grey but now I'm not too sure : r/eyes
Are gray eyes the same as blue in terms of genetics? - The Tech Interactive
Baby Eyes Changing Color: The Surprising Truth
Eye color percentages around the world and what causes eye color
What Is the Rarest Hair Color and Eye Color Combination in the World?
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