Why do eyes lose their color when scarred?
In: Biology
Eye colour is all about refraction – how light bends when it goes through the clear layer of your cornea and into the fluid-filled cushion that is the lens of your eye. All irises (the coloured part around the pupil) are brown. Different lenses/cornea constructions cause colours other than brown. A blue-eyed person has a brown iris with a lens plus cornea that bends light to make it look blue. Same for green and hazel.
When you injure/scar the lens/cornea, you affect how the light is bent through the lens/cornea, and that can change the colour you perceive.
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