Progressive retinal atrophy (PRA) is a group of inherited diseases that causes progressive degeneration of the light sensitive cells at the back of the eye. Dogs with PRA have normal sight at birth, ...

Scientists have identified the genetic mutation that causes progressive retinal atrophy in English Shepherd Dogs, which results in incurable blindness, and developed a genetic test to help eliminate ...

The new DNA test means there is no reason why another English Shepherd Dog ever needs to be born with progressive retinal atrophy, which causes total blindness. Progressive retinal atrophy (PRA) is a ...