Laser Femtosecond Myopia Surgery is mainly suitable for myopic patients who are between the ages of 18 and 50, have stable myopia for the past two years, have no eye diseases, and whose corneal thickness meets the criteria for the surgery. 1. Age: Myopic patients should try to keep their age between 18 and 50 years old, if they are too young or too old, it may affect the effect of the surgery. 2. Stable myopia: the patient’s myopia should be relatively stable in the past two years, and the change of myopia should not be more than 50 degrees per year, or else there will still be the possibility of myopia after the operation. 3. No eye diseases: If the patient has eye diseases such as keratitis, corneal ulcers or conjunctivitis, then he/she should wait until these diseases are cured before undergoing myopic surgery, so as to avoid postoperative infections. 4. Other: In addition, the patient’s corneal thickness, anterior chamber depth, etc. may meet the surgical criteria, otherwise complications may easily occur after surgery. It is recommended that myopic patients should seek timely medical attention to assess their condition and choose the appropriate treatment under the guidance of their doctors.