The only way to be sure is to have your dogs eyes examined by a Veterinarian who specializes in Ophthalmology. No, CERF registration is good for twelve months from the examination date. It does not indicate whether or not the dog carries the PRA gene. No, this condition is hereditary and if your dog carries the genes for PRA, it will develop. Even though your dog will become completely blind, the condition is painless.
Many dogs adjust to their loss of sight and do just fine in their own surroundings.
PRA is inherited as a simple autosomal recessive gene. The dog must inherit this recessive gene from both parents. If it receives the gene from only one parent, it will not be affected. However, it will be known as a carrier as it can pass this gene on to its own progeny. It is extremely important for anyone considering to breed their dog to have its eyes certified.