What causes eyes to change color?

Question

I have a hazel color surrounding my pupil, and a vivid blue filling out the rest. My sister says that as time goes on, I may lose my blue eyes! Is this possible? Is it odd that I have the hazel surrounding my pupil, but not the rest? What causes eyes to change color?

Answer 1

The iris is a muscle that expands and contracts to control pupil size. The pupil enlarges in dimmer lighting and grows smaller in brighter lighting. The pupil also shrinks when you focus on near objects, such as a book you are reading.

When the pupil size changes, the pigments in the iris compress or spread apart, changing the eye color a bit. Certain emotions can change both the pupil size and the iris color. That's why some people say their eyes change colors when they're angry or loving.

Eye color also can change with age. This happens in 10 to 15 percent of the Caucasian population (people who generally have lighter eye colors). For instance, my once very brown eyes are now hazel, a combination of brown and green. However, some hazel eyes actually get darker with age.

Note that if your adult eye color changes pretty dramatically, or if one eye changes from brown to green or blue to brown (called heterochromia), it's important to see your eye doctor. Eye color changes can be a warning sign of certain diseases, such as Fuch's heterochromic iridocyclitis, Horner's syndrome or pigmentary glaucoma.

Answer 2

Accualy, its a natural thing. There is a pigment called Melanin which colours you hair, skin, and eyes. The less melanin there is, the lighter your eyes, skin tone, and hair will be, if you have a lack of melanin, you will have light grey or blue eyes, more will give you dark blue, and brown eyes with darker skin and hair. You usually take your mothers eyes though, but they change because its a natural thing to do, melanin isnt a steady substance, its constantly changing throughout your life, this is why when your a baby your usually born with blue eyes, because as a baby you dont have much Melanin, hope this helpedddddd :).

Answer 3

Yes its possible.

My eyes are a dark blue. And sometimes they turn Super green. Its really weird! I think it has something to do with the weather. Whenever it's cold my eyes are blue. And when its hot my eyes are green. But it think it might be different with other people :)

Answer 4

Some times the body has natural changes its fine. Help!

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