PRK, or Photorefractive Keratectomy, is often a better option for patients with thin corneas instead of LASIK. The procedure changes the curvature of your cornea in two steps: first, they scrape off the top layer using an alcohol solution, and then they use a laser to correct your vision. While the two procedures have similar visual results, the recovery time for PRK is longer. The procedure itself is relatively painless, but recovery can take a few days since the surface layer, called the epith