When Amy van Dyk noticed her pooch Mavro was 'running into things', she thought he was simply a clumsy puppy. She soon discovered he had a vision impairment — but that hasn't stopped Mavro from hiking ...

Progressive retinal atrophy is an eye disease that affects dogs and cats and, in the worst case, can lead to blindness. Certain breeds are particularly susceptible to this disease. Veterinarian Dr.