"Old timers" will catch up with many of us. In my case it was Fuchs dystrophy. The cells on the inside of the cornea are supposed to keep the water content of the cornea in check. You are supposed to have a life time supply of these "Sucker" cells.. I evidentially died about 30 years ago. You wake up and it looks as though you are looking through a rain splattered windshield. The cells in the cornea have swollen up with water. A high salt eye drop, will help for a while, but not for long. I opted for a DESEK, at least that is I think how it's spelled. The endothelial cells of a donor cornea are sliced from the back of the donor cornea and rolled up like a taco. They are then inserted, after removing the dead "Sucker" cells, through an incision against the inside of your cornea. You spend the next 24 hours flat on your back with an air bubble holding the graft in place. Because the anti rejection medication causes cataracts you receive plastic lenses at the same time. I had both eyes done about ten years ago. I should have had it done sooner and probably would have, if I had known how much the improvement would be.