LASIK or Lasik (laser-assisted in situ keratomileusis), commonly referred to simply as laser eye surgery, is a type of refractive surgery for correcting myopia, hyperopia, and astigmatism.

LASIK is performed by ophthalmologists using a laser. This surgery reshapes corneas to sharpen vision.

LASIK is similar to other surgical corrective procedures such as photorefractive keratectomy (PRK), (also called ASA, Advanced Surface Ablation) though it provides benefits such as faster patient recovery.

Both LASIK and PRK represent advances over radial keratotomy in the surgical treatment of vision problems, and are thus viable alternatives to wearing corrective eyeglasses or contact lenses for many patients.

--from wikipedia.org

The following articles provide a more indepth look at the benefits of lasik.

What is Lasik?
To understand what Lasik is it is important to know what the word stands for. The word LASIK stands for Laser-Assisted In Situ Keratomileusis. Lasik is a procedure that...