LASIK is another laser procedure used to treat the same conditions that PRK does. It works by creating a flap in the cornea, instead of wiping off the top layer, and then using the laser to reshape the eye. LASIK can be a little more accurate for patients who need a higher vision correction for nearsightedness or farsightedness. PRK also has a longer recovery period, usually 7 to 10 days, compared to that of LASIK, which is 24 hours. Overall, LASIK has a slightly higher risk for complications than PRK, because it creates a flap.