Why does my cat have different coloured eyes?
What is the condition?
The condition is technically known as heterochromia iridis, the Greek term for ‘differently coloured irises’. Also known as odd-eyed cats, these beautiful kitties have two different coloured eyes, usually one blue eye, and one either green, brown, or yellow.
What causes this?
The amount of melanin — the pigment that turns our own skin darker when we get a suntan — determines eye colour in both humans and cats. The white or white-spotted gene found in some cats is normally the cause of heterochromia in them.
Some cat breeds are more likely to develop complete heterochromia. Among these are the Turkish Angora, Japanese Bobtail, and Turkish Van. More often than not, complete heterochromia occurs in white cats, or in cats with the white spotted gene, which can occur in cats of any colour.
Does it affect the cat?
Having eyes of different colours will not interfere with your cat’s natural instincts, such as seeing, hunting, and ability to jump. Their eye-catching eyes can see things as clearly as you can — maybe even better.