Why does the sun lighten hair,darken skin, but doesn't change eye color.?

All of these things have melanin. So why doesn't your eye color change? I know the reason why your skin/hair changes but why not eyes. ';Sun darkens skin because it triggers the production of melanin, a brownish-black pigment that helps filter out harmful ultraviolet rays. It lightens hair because the UV light triggers the breakdown of these selfsame melanin molecules into simpler and evidently less colourful compounds.';Why does the sun lighten hair,darken skin, but doesn't change eye color.?
Because we never look at the sun





I think our eyes are ';Tanned'; when we look to long and become blindedWhy does the sun lighten hair,darken skin, but doesn't change eye color.?
because your eyes arnt like your skin or hair. your eyes are more sensative and you can go blind if you stare at the sun too long or if you shine a light in your eye for a certain amount of time.





dont try to change your eye color by looking at the sun. if your eyes change color for any reason, it would take a LOOOOOOOOOOOOOOOOONG time for the process to gradually turn a different color. goodluck =)
easy because you cant look at the sun and its apart of ur veins and stuff if u look at the sun ur blind