Your dog could be at risk of incurable blindness if it carries a specific genetic mutation that causes progressive retinal atrophy (PRA). Scientists have identified the variant associated with PRA in the English Shepherd Dog and a new genetic test will eliminate this form of inherited blindness in dogs, but owners usually don’t realize their pet has PRA until it is middle-aged. Learn about PRA and the latest study published by the University of Cambridge. Your dog could be at risk of incurable blindness (PRA)Progressive retinal atrophy (PRA) is a group of inherited diseases that causes progres…