Using a programmed laser, your eye surgeon reshapes portions of your cornea. With each pulse on the laser beam, a little volume of corneal tissue is eliminated. After reshaping the cornea, the surgeon lays the flap again into area. The flap ordinarily heals with out stitches. Curvature in the Cornea: https://wekurehealth.com/blog/cataracts-what-to-expect-and-how-to-prepare-wekure-health/