Why do eyes lose their color when scarred?
In: Biology
Your eye is a ball that is imbedded in your skull.
The part you can touch is called your cornea. This is a clear “window”. Right behind your cornea is a “bubble” of clear fluid. You constantly “wash” this fluid through – think of it like a pool of water has a stream on either side, so the water swirls around and gets replaced all the time. The other side of the “bubble” is your iris. This is where the colour of your eye is.
So when you look at someone’s eyes, you look through the window and the pool to the iris to see their eye colour. That is what you are looking at. The little black dot in the middle is a hole called your pupil, and light shines through it to the back of your eye. This is what allows you to see.
When something damages your eye, the cornea – the “window” – gets scarred. This is what turns milky. When the cornea gets scarred, it’s like drawing a curtain over a window. It means you can’t see out, and you can’t see in. A person looking from the outside can’t see the iris – the eye colour – any more than a person looking from the inside can see light.
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