After DS's stroke he had to reapply for his DL and, after the driving test that he had to take, was refused on the grounds of poor peripheral vision. His eyesight was checked by his GP, his optician and the stroke consultant who all said they could find nothing wrong. He asked for a review and was again refused. Actually, driving wasn't his forte before the stroke which might have had a bearing on things.
It has however given me the occupation of driving him to and from appointments. We have one in Sheffield in a couple of weeks - it will snow, because it always does.
Lucky could you get some sort of informal test, maybe done by a driving school, or one of those older people's tests (RoSPA was mentioned on the news), so you have an opinion on which to base a decision about appealing.