Heterochromia

The iris is basically the area around our pupils that gives colour to our eyes. It is the amount of melanin that determines what colour our eyes will be. Blue eyes have less melanin than brown eyes. Heterochromia means different coloured eyes, as in one blue and one brown eye. Hetero means different and chromia means colour. Heterochromia, is not an eye disease and it does not affect our vision or pose any thread to ocular health.