Ever seen a cat with different colored eyes? Maybe you own one?
This condition is known as Heterochromia and is more commonly seen in white cats.
A kitten's eyes appear blue due to the lack of melanin pigment in the iris of their eyes. As cats grow this melanin composition will change and dictate their eye color. Some cats eyes will remain blue, some cats eyes will change color and some will have different colored eyes
It is advisable to seek veterinary advice if you cat's eyes change color. This is because heterochromia in itself is NOT a threat to your cat's health but a change in eye color may indicate another condition other than heterochromia such as Cataracts, Glaucoma or another optical disease or affliction.
Many cats simply have different colored eyes (Heterochromia) and are otherwise perfectly healthy.
Heterochromia has no negative impact on a cat's ability to see.
White cats with one or more blue eyes are known to have a higher incidence of deafness.