Laser eye surgery is a medical procedure that uses focused light beams to correct vision problems, such as nearsightedness, farsightedness, and astigmatism. The most common types of this surgery include LASIK and PRK, which reshape the cornea to improve how light enters the eye. During the procedure, a surgeon creates a thin flap in the cornea or removes the outer layer, then uses a laser to reshape the underlying tissue. The surgery is typically quick, often taking less than 30 minutes, and many patients experience improved vision almost immediately after the procedure.