Eli5: how blue eyes are different

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I keep hearing that other color eyes have pigment to make them that color but with blue eyes they have no pigment and it is the physical structure that only reflects blue.

How is that any different than any other color?

Doesn’t red paint only look red because it reflects red light?

Doesn’t brown pigment only look brown because it reflects brown light?

I thought that is how all color worked, by reflecting only that kind of light.

People say it about blue eyes like it’s somehow different but it sounds the same to me

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7 Answers

Anonymous 0 Comments

We have no pigment, and the underlying colour of the iris reflects blue. Green eyes are caused by a yellow pigment I forget the name of. The yellow pigment and the blue base gives green. The other colors are caused by a mixture of brown by melatonin, this yellow one I forget the name of, and the blue of the iris.

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