Which complications can I expect after a laser treatment?

Example: Is there a risk I will become blind or will problems occur after 20 years? If the day after the treatment at the check-up it shows that the flap is not entirely smooth or if an allergic reaction took place, then an eye-washing will take place and you will have to return to the check-up the next day. Lasik is a sort of Lameller surgery. Lameller refraction surgery was introduced in 1949. Until this date there have not been any problems noted for laser patients on the long term.