A surgery of laser vision correction can reshape the cornea using a cool beam of light, improving visual acuity. The laser performs in several ways, flattening the cornea, steepening the cornea or smoothing out corneal irregularities. Laser vision correction methods LASIK and PRK are two types of laser procedures. Most LASIK surgeons correct both of the patient’s eyes at the same visit, while PRK always treats the two eyes with a proper interval.

Candidates of LASIK or PRK should meet certain requirements, which are essential to get safe and desired outcome. There is online LASIK screening for a personalized evaluation.

Before the 1950s, there were only eyeglasses for refractive vision correction. Nowadays, there are still contacts lenses and other surgeries that are used to correct refractive errors. Refractive surgeries including LASIK and PRK use laser energy to reshape the curvature of the cornea, while artificial lenses perform in refocusing light rays.