Those 50 Pictures Of Unique Individuals Show That Genes Are Hard To Forget

Sectoral heterochromia is a congenital eye condition that affects one or both eyes. It is characterized by the presence of two different-colored irises (the colored part of the eye). The cause of this condition is unknown, but it may be related to genetics or another underlying condition. As the name suggests, heterochromia is a difference in color between the iris and surrounding tissue.