I have been wearing contacts for a long time. My refraction is about -4.25 D. A friend of mine had the surgery and told me that Lasik operation is now very safe. So, I did it ! The operation only took about 20 minutes and it doesn't hurt at all, when I opened my eyes right after the operation, my vision was still a bit cloudy, but I think I have about 70% of my eyesight. When I went back for post-op the next day, I can see very clearly already.