Inherited blindness (PRA)
The retina slowly wears out, so the cat loses much of its sight between about three and six years old. The gene has also been found in Colorpoints. In 2009 and 2010 it was common in the Siamese family; testing has probably made it rarer. At home a blind cat usually copes well.
How it is found: DNA test of the parents. A carrier is only mated with a cat without the gene.






