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Heterochromia iridum passed on from mother to daughter 

Heterochromia iridum is a difference in coloration, usually of the iris but also of hair or skin. It is a result of the relative excess or lack of melanin (a pigment) and may be inherited, or caused by genetic mosaicism, chimerism, disease, or injury.

Heterochromia of the eye is of two kinds: 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.

In this photo you can see an impressive example of complete heterochromia!

Found on:
http://imgur.com/gallery/1zJtTfk

text source 

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