My mom has dementia and we as a family have known for a while and my dad has just accepted and wants to get her the best treatment possible. She is having the vision related symptoms of dementia and he wants to take her to an ophthalmologist to see if she needs a prescription adjustment. Is this even possible? From the articles I have read, the vision issue is related to the brain disease so I am not sure that any part of it can be remedied? Help, suggestions please.