Progressive retinal atrophy (rcd2-PRA)

LABOKLIN Service ID: 8309

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.



Breed list

Collie (rough/smooth)


autosomal recessive


1 - 2 weeks after arrival of the sample in the lab