Dry eyes, eye infections, glare, double vision in one eye, and poor vision correction may occur after femtosecond myopia surgery. Femtosecond laser surgery is one of the more common clinical treatments for myopia. It uses laser cutting to vaporize the tissue between the layers of the cornea to improve the refractive ability of the cornea, so that the objects can be focused on the retina when seeing, and the effect of seeing objects clearly can be achieved. Although femtosecond laser surgery is relatively mature and safe, it may still cause some harm to the organism. For example, cutting off the corneal sensory nerve fibers, resulting in dry eye caused by reduced tear secretion. Bacterial and other pathogenic infections in the eye due to the lack of good care during surgery. A small number of people who have undergone the surgery may experience adverse reactions such as glare and monocular diplopia. Some people with suboptimal surgery may experience undercorrection or overcorrection of vision, again leading to blurred vision.