Dog

Progressive rod-cone degeneration is one of several forms of progressive retinal atrophy (PRA), which causes the degeneration and death of retinal cells. The main symptom is progressive vision loss from the age of 3-5 years. The test can be performed for any breed, but is particularly relevant for the breeds listed below

Cone-rod dystrophy 1 is a form of progressive retinal atrophy characterised by an early, severe and rapidly progressive loss of cone function accompanied by a progressive loss of rods.