PRA – Progressive Retinal Atrophy
PRA is an inherited disease that causes blindness in dogs. Breeds seen most commonly at Animal Eye Care with PRA are Labradors, Poodles, Cocker Spaniels and Australian Cattle Dogs. Most other breeds have been reported to have PRA. Crosses can also be affected with PRA. Cats are also prone to PRA, and is seen most commonly seen in Siamese and Abyssinians.
Age of PRA onset
There are 2 main types of PRA.
Young age onset. This is seen most commonly in the Collie and Irish Setter. Affected dogs show night blindness by 18 months of age and are blind by 36 months of age. The most common form of PRA is the late onset form. These dogs classically show night blindness around 5 years of age and are then blind by 8 years of age. At Animal Eye Care the late onset form of PRA is by far the most commonly seen form.