Teresa, little Frankie is so cute, I'm glad he's improving, and even if he does go blind he can still have a normal life.
Since I don't know if you have had any experience with blind cats, I just wanted to mention my cat, Midnight, (deceased) who went completely blind due to glaucoma in both eyes during her last few months. Cats do adjust well to not being able to see. Midnight was still able to find her way around our home easily and without running into objects by using her whiskers as feelers, and my vet thought she was also using her memory of where everything was located.
FYI: The following link includes a section on blind cats:http://www.messybeast.com/disabled.htm#blind