gery is a one-time expenditure that may potentially relieve all of the daily and weekly problems with contact lenses and glasses. Further, it allows people to engage in outdoor activities without having to worry about their eyewear. However, surgery also has the greatest disadvantages of all. Surgery can overcorrect, undercorrect, or create a variety of other vision problems that are difficult to reverse. Infrequently surgery can make vision so bad that even when corrected with glasses, it is worse than it was before.