It will take 4-6 weeks usually to know your final vision. You will not have perfect vision because of your other problems any one of which could prevent the eye from seeing 10/20 First you had RD which scars the cornea and creates irregular astigmatism that cannot be fully removed even with LASIK. Than your have macular degeneration which is the most common cause of legal blindness in older adults. Many surgeons, including our practice, will not do toric or multifocal IOLs in a patient that has had previous RK. We use the new light adjusted lens. But do not expect 20/20 vision even with glasses, if you get that it is a gift.