A: Known as laser eye surgery, Laser Assisted In-Situ Keratomileusis (LASIK), is a corrective procedure for nearsightedness, farsightedness, and astigmatism. Reducing or eliminating  the need for corrective eyewear, it is the most common vision corrective surgery. LASIK refocuses light entering the eye to a single point, using a thin corneal flap, thus sharpening vision. With minimal discomfort, vision is typically restored within 24 hours.