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

The difference is how the colors are separated.

With pigments, some of the colors are absorbed and some are reflected. The reflected ones are what we see.

But certain materials or surfaces simply reflect different colors differently. So if the other colors get yeeted somewhere else and only blue makes it to your eyes, then you see blue.

It’s why the sun is yellow and the sky is blue. The sun is yellow because the blue got yeeted somewhere else by the atoms in the air. The sky is blue because it’s the “somewhere else”. https://www.youtube.com/watch?v=_Yli-yvNy-k

Blues eyes are blue by the same principle. The other colors mostly pass through (and are absorbed somewhere passed the iris) and blue gets yeeted back toward the outside world.

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