Heterochromia refers to a difference in coloration, usually of the iris but also of hair or skin. Heterochromia is a result of the relative excess or lack of melanin pigment. It may be inherited, or caused by genetic mosaicism, chimerism, disease, or injury. 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.
The affected eye may be hyperpigmented (hyperchromic) or hypopigmented (hypochromic). Here in our list Few Celebrities are affected with Heterochromia , some are less effected and others are more.
Jonathan Rhys Meyers
Apart From Humans Animals also effected with Heterochromia, the Three animals listed below