What does it mean when your eyes change color?

What does it mean when a persons eyes constantly changes color?

• my best friends eyes constantly change color and i mean it constantly changes and he wants to know why and so do i please if u know why please tell us

• Answer:

  One would expect that a trait like eye color should remain constant throughout the person's lifetime, but many people experience eye color changes: slight or very obvious. Various factors can cause change of eye color in humans. The majority of children have some eye color change after the birth. Typically, newborns have blue eyes, which change to green, light blue, light brown and dark brown, as they grow older. It is thought that exposure to light after birth triggers the production of melanin in the iris of the eye. By three years of age, the eyes produce and store enough melanin to have their natural shade. 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. Hope this helps you and if you think that whatever is happening to your friend`s eye colour is dangerous consult a doctor they would know best. BEst Regards TSS