As with any vision treatment procedure where the cornea is altered, certain precautions should be taken. You should avoid getting contaminated water in the eyes for at least one month. This includes water from swimming pools, spas, lakes and the ocean. When showering or taking baths, keep the eyes closed in order to avoid getting soap and dirty water into the eyes. When exercising, sweat should be kept out of the eyes for at least a month after the procedure. Also, patients should avoid rubbing their eyes vigorously for a month following the procedure. Females should also avoid applying eye makeup for one month after the procedure.