One of the most beautiful things of a cats are their eyes. Those intense big eyes are attractive, and a lot of breeders want specific eye colors.
Because of all the breeding a lot of eye colors are created. From blue to green and orange. The wild cat has brown to copper colored eyes and sometimes yellow or green. Most of the time the eye color is independent of the coat color, but with some breeds the eye color has to be a specific color. Like silver tabbies, who have to have a green eye color, but genetically a copper color or gold is possible too.
The only eye color that is related to the coat color is blue. Blue is caused by a form of albinism, this also means that there isn’t any pigment created in the coat and in the iris. White cats with blue eyes are often deaf, or have
a bigger chance in becoming deaf. Because the gene that is responsible for
the lack of pigment, is also related to the gene that dries up the hearing fluid in the ear.
The blue eyes of a Siamese are caused by something else. This has to do with a bad three dimensional sight. But this also caused the cats to squint. But the breeders have bred this out of the breed.