Friday, October 9, 2009

Heterochromia

Heterochromia refers to a difference in coloration, usually of the iris. Heterochromia is a result of the lack of melanin or pigment.
Eye color, specifically the color of the irises, is determined primarily by the concentration and distribution of melanin.
The affected eye may be hyperpigmented or hypopigmented.

In complete heterochromia one iris is a different color from the other.
In partial heterochromia or sectoral heterochromia, part of one iris is a different color from its remainder.
Central heterochromia is an eye condition in which there are two different color that the mid-peripheral zone.

Complete Heterochromia in human eyes


Complete Heterochromia in dog eyes


Complete Heterochromia in cat eyes


Central Heterochromia showing a brown to blue iris