The damage to the cornea at the epithelial level heals quickly after the procedure, and under normal circumstances you can return to normal work and study within a short period of time. Semi-femtosecond surgery compared to full-femtosecond, although both are laser myopia correction surgery, but compared to the latter, its damage to the cornea will be greater, but mainly corneal epithelium and other levels of the very small slight incision, due to the strong regeneration of the corneal epithelium, the fastest in a few hours or a day to repair the incision to achieve a state of healing. Femtosecond surgery is currently the clinical use of more myopia correction surgery, in the case of complete pre-operative examination and post-operative care treatment of the cornea in the short term healing is not too much of a problem, but the damage to the corneal endothelial cells can not be regenerated, postoperative corneal conjunctival inflammation and infection will affect the recovery of the wound. Suggestions for myopia correction surgery to choose a regular hospital, postoperative attention to eye care and regular review of problems to be resolved in a timely manner.