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Section: Veterinary Care In-depth
There is no treatment for PRD. Most forms of the disease are inherited as a simple autosomal recessive trait, which allows many dogs to be silent carriers of the disease. This inheritance pattern, combined with the fact that many dogs do not show signs until after they are older, make the disease very difficult to eradicate in some breeds of dogs.For the 15 breeds of dogs in which genetic testing has been developed (www.optigen.com), blood testing of potential breeding dogs is the best way to identify both carriers and dogs that will show clinical signs. For all other breeds, electroretinography can be performed as a screening tool to detect the disease prior to the onset of clinical signs and retinal abnormalities.The most common screening test used for PRD/PRA in breeding dogs is the annual examination of their eyes by a veterinary ophthalmologist. Results of this exam are then forwarded to the Canine Eye Registry Foundation (CERF, www.
Blindness is the loss of vision in both eyes and may be caused by disorders of the structures that receive and process the image or specific visual pathways of the brain that transmit and further process...
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