There are two different types of upper eyelid visual problems due to obstruction: 1. A large hood of excess droopy SKIN that actually blocks part of your peripheral vision; and 2. The other is true ptosis (low hanging eyelid) of the lid which is due instead to a weak or detached muscleRegardless, both must be documented by a visual field test from your ophthalmologist. Even in the best case, Medicare may NOT covered the surgery. The problem is that Medicare won't tell us until after the surgery is over. At that point, they may write us a letter and say, "you know what, that wasn't truly necessary and we won't pay you." For this reason, most eyelid surgeons now have you pay them first, and place the burden on trying to collect from Medicare on you, after the surgery. Hope this makes sense, because it certainly doesn't to any of us.....