image creditEye color, specifically the color of the irises, is determined primarily by the concentration and distribution of melanin. Heterochromia refers to a difference in coloration and is a result of the relative excess or lack of melanin. It may be inherited, due to genetic mosaicism, or due to disease or injury.
The affected eye may be hyperpigmented or hypopigmented. Heterochromia of the eye is of two kinds. In complete heterochromia, one iris is a different color from the other. In partial heterochromia, part of one iris is a different color from its remainder.
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I'm the proud owner of a cat with heterochromia. I'm afraid this particularity is also associated to deafness (Or deafness is associated to heterochromia... i'm not sure). Well... i'm the proud owner of a beautiful deaf kitten with heterochromic eyes. But i'll tell you that this has almost more advantages than problems.
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