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Created with Fabric.js 1.4.5 Definition:Heterochromia iridis is a condition in which the iris in one eye has a different color than the iris of the other eye. .67% of the American population is affected by Heterochromia Iridum. Did you know that Heterochromia Iridum is a dominant autosomal trait? This means that if an individual is born with it, that one of the parents has it as well. Heterochromia Iridum There are three forms of this trait:1.Complete-2 different colored eyes2.Sectoral-Segments of contrasting colors within one iris.3.Central-a different color radiating out from the pupil. When an individual has Heterochromia Iridum,one of their irises is lighter in color and the other is darker.This is caused by the loss or gain of pigment in the iris. This is an example of Central Heterochromia Iridum.Fun Fact: This is actually a picture of my own eye, and I have recently discovered that I have Heterochromia Iridum. This is the rarest form of the trait. This is called Complete Heterochromia Iridis. Heterochromia Iridum is rare is humans, but is very common in cats and dogs! Did you know that eye color is determined primarily by the amount and distribution of melanin within the iris tissues? That means people with Heterochromia Iridum have crazy melanin levels in different parts of their irises. Most cases of it are genetic and can go hand in hand with Congenital Syndrome, or it can be obtained through a traumatic injury. Sectoral Heterochromia Iridum. This image shows both Sectoral(left eye) and Complete Heterochromia Iridum. In a survey of children, only 47 kids out of a total 1,000 showed signs of Heterochromia Iridum. Only 6 out of 1,000 peoplehave Heterochromia Iridum. To those individuals who obtain this trait genetically, they experience no discomfort or pain. However if you obtain Heterochromia Iridum through an injury, those individuals will experience sharp pains, bleeding of the eye, and occasional issues with vision. Heterochromia Iridum is what causes someone's eyes to appear as a hazel color.
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