The Progressive Retinal Atrophy(PRA) leads to a degeneration of the retina and results in...plus
The Collie-PRA, also termed rod-cone dysplasia type 2 (rcd2), is one form of progressive retina degeneration which is known for a long time as major health problem in the collie breed. An abnormal development of the cones and rods of the retina leads to night blindness with early onset. First symptoms appear at whelp-age of about 6 weeks. In the majority of cases, a complete loss of vision appears till an age of 1 in rcd2-affected dogs.
Collie (poil long/court)
1-2 weeks after arrival of the sample in the lab