We are going through this with our Moose. He was diagnosed 6 months ago with PRA. His opthamologist put him on several supplements including at least 2000U a day of fish oil. We have noticed that he has now lost a lot of his peripheral vision, but is doing well. We have put many night lights through out the house to help with his diminished night vision. We also have solar lights positoned on the fence in the yard and have two very bright lights on either end of the pool deck. So far, this really helps him navigate at night.
Hugs to you and Phene.