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Image: Xavier Nájera

One of the many fascinating variations that exist among humans (and other animals) is heterochromia iridis, or heterochromia iridum – terms used to describe different colored eyes in the same person. Caused by an excess or lack of melanin, heterochromia can occur as a result of genetics, disease or injury. Yet, whatever its underlying cause, heterochromia is almost always eye-catching!


Image: Noura mohammad.

There are three types of heterochromia of the eye: complete, sectoral and central. Complete is when both eyes are of different colors – for example, a brown eye and a blue eye – and is perhaps the most striking and widely-known of the three.

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Image: Clavecin

Sectoral heterochromia occurs when there are two different colors in the same iris – a splash of a second color that’s different from the dominant hue.

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