Also known as progressive retinal degeneration for that reason, the disease is inherited and has no known cure or treatment. (dogcare.dailypuppy.com)
Various forms of the disease stem from 24 currently recognized genetic mutations, each of which affects the function of retinal cells. (protomag.com)
The back of the eye is lined with a layer of retinal cells which are stimulated by light passing into the eye through the lens. (thebedlingtonterrierhealthgroup.webplus.net)