Eye color is determined by genes that are inherited, determined. Two major genes determine the color, and small deviations can be determined. Current Eye color is made from a pigment called melanin. The amount varies between melanin, the color of the eye. For example, blue eyes have no melanin and brown eyes have a lot. When the first children were born, they usually have blue eyes. Light is then stimulated to eye melanin and the color is usually determined by the time a person three.
In casesif a person suffers from albinism, eye, they lack any pigment at all. Many people believe that albinism results in red eyes, but that's not true. There is really no pigment, and the iris, because a very pale blue.
Some animals have to do that albino red eyes, as have show through the retinal blood vessels, where there is not enough pigment. Because the human eye is so large, usually produces enough pigment. But this can vary and it can lead to a slightred or purple appearance of the iris. However, the iris is normally.
As people with albinism is no pigment in their eyes, it can be difficult for them to have exposure to the sun. As the eye colors are blue and brown as determined by genetics, the people very little or not developed with pigment to all in the same way. The copy of the gene they inherit is modified and will not work correctly. This change in the body that prevents the normal amountsPigment.
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