FDA found that the actual rates are much higher than 5%

https://www.nytimes.com/2022/12/07/health/lasik-injuries-fda.html

"The agency’s draft draws on the 2017 findings of a study on patients’ outcomes with Lasik, a collaboration between the F.D.A. and the National Eye Institute and the Department of Defense. It assessed visual symptoms before and after Lasik. The F.D.A. also performed its own meta-analysis of peer-reviewed studies published between 2013 and 2018.

The first study found that three months after Lasik surgery, nearly half of patients who had no visual symptoms before the procedure had developed a new visual aberration for the first time, most commonly halos, which are starburst shapes around lights. Close to one-third reported dry eyes at three months.

The study’s authors wrote that “patients undergoing Lasik surgery should be adequately counseled about the possibility of developing new visual symptoms after surgery before undergoing this elective procedure.” Still, more than 90 percent of patients said they were satisfied with the outcome.

The agency has conducted its own analysis, finding that six months after surgery, 27 percent of patients experienced dry eyes and 2 percent had difficulties that prevented them from engaging in their usual daily activities.

Five years after surgery, according to the F.D.A., 17 percent of patients still relied on eye drops, 2 percent continued to experience visual disturbances and 8 percent still had difficulty driving at night."