Have a good look through with "Search" using words like Lasik etc., there's been quite a lot posted about the initial requirements. There is a maximum correction allowed, and there are other factors listed as well over the last few years.
Set one year in the second box down on the left -- and filter for the medical forum of course.
If you don't get what you need, set the maximum time, (the first one on the list) something like "Anytime"