How does it work?
LASIK works by first lifting a thin flap off of the the outer layer of the eye, called the cornea. This historically was performed by using a blade, it is now usually done by laser. The underlying cornea is then reshaped using another type of laser in a way that negates the eye's natural refractive error (aka prescription). Essentially, a person's glasses or contact lens prescription is 'implanted' directly into the cornea, leaving one able to see as good or better than before, but without the need for glasses or contacts. The flap is then gently replaced securely in its original position.
Not everyone's eyes can have standard LASIK; for these candidates PRK may be an option. PRK basically skips the first step of LASIK; there is no flap lifted off the front of the eye. The laser is applied directly to the cornea instead. The initial healing time is somewhat longer but the end result is equivalent to LASIK: sharp, clear, glasses free vision.
Think of how much time, effort and expense can be saved over time: no more expensive glasses to buy or contact lens refills to order... no more sticking contacts in your eyes in the morning, no more need for cleaning them at the end of the day and no more worrying about falling asleep in contacts. Just wake up in the morning and start the day with crisp, clear vision!