How does laser eye surgery work, what do they do to your eye?

Well there are two types of Refractive surgery. One is PRK and the other is LASIK. Both of them involve reshaping your cornea by burning away some of it. When they do this it allows light to enter your eye in a way that gives you the most satisfying vision. The only difference is with lasik is they make a flap to in your cornea that way they can put it back over your cornea to help it heal quicker. I have seen these surgeries done and they take a matter of seconds to complete. Hope this helped!