From TFA: > The results [of a previous study], published in October 2014, showed that some patients developed problems that adversely affected their day-to-day

From TFA: > The results [of a previous study], published in October 2014, showed that some patients developed problems that adversely affected their day-to-day lives, such as difficulty driving at night or in sunshine. But it was such a small number — less than 1 percent — of the patients in the study. > On Wednesday, the group released a follow-up report in JAMA Ophthalmology that provides more sobering information. The study suggests that the percentage of people who undergo LASIK and wind up with new visual symptoms — such as double images, glare, halos or starbursts — may be much higher. > One interesting component of this study was that the survey showed that the percentage of people with symptoms may be much higher than what has been previously reported in studies involving direct interviews with health-care professionals.