I was told that I have a thin cornea so only the total surface shaping "PRK" could be used on me. If the cornea is thick enough then the flap method "LASIK" can be used.
Even if you see 20/20 or better on an eye chart after laser eye surgery, you still may need reading glasses once you hit your 40s. This is because the eye's lens becomes less flexible with age (a condition called presbyopia), reducing your near vision.
However, researchers are studying different approaches to presbyopia surgery. So it's possible that you could have one of these new presbyopia-correcting procedures performed later to restore your near vision, once they are FDA-approved.
Read more:
http://www.allaboutvision.com/visionsurgery/prk.htm#ixzz1B8idQOI4Even though the website says my method can still allow me to wear contacts, I have tried but my eye shape is not curved properly and the contact tends to sink instead of staying oval. My Optician does shake his head and mention that the Laser eye surgeons never fully explain the limitations of wearing contacts post operation.