As a serving ATCO who is investigating laser surgery myself, I have recently been given all the rule book to read, and unfortunately the RAF do not accept applications from those who have already had laser surgery. I believe they consider the long term effects unknown. Once you are serving, you have to go through the approved centres if you wish to have the surgery, which has to be completed by a consultant surgeon (thereby doubling the cost). Sorry if this is not the news you were hoping for.