My 84-year old father has a 30-year old Intraocular Lens implant -- that was placed after he had a successful retina reattachment surgery. He struggles to see with that eye. We took him to see an ophthalmologist with a good reputation for doing cataract surgery -- and she said that she couldn't help. Is there a type of eye specialist that could help my father see better? He is a very active senior and the best part of my day. He loves to read and keeps a journal, but these activities are growing more difficult without being able to find some help for his vision problem. Any advice would be welcome.