| Genetics |  |
Progressive retinal atrophy - PRA
This disease causes the retina to degenerate. In time the cat will be completely blind. There is no cure for the disease, but if the cat lives indoors, and if the furniture is not moved around to much in the home, even blind cats manage quite well and can live a long life.
PRA exists in different varieties, one is hereditary dominant, one recessively, and then there is one variety that one doesn't know if it's hereditary.