The laser surgery is the most advanced treatment for refractive error myopia, and it is impossible to say who is better. The procedure can be performed with the help of a laser, which can be used to correct the vision. The advantages are low risk, high accuracy, small incision, short duration of surgery, but the price is relatively high, and the surgery to adapt to the population than the semi-femtosecond laser surgery is limited, such as some corneas are too thin, too high or not suitable for the full femtosecond laser surgery people can not be treated by this surgery; 2, semi-femtosecond laser surgery: the advantages of this surgical method is relatively cheap. However, the chance of post-operative complications is higher than that of full femtosecond laser surgery, and the risk of surgery is also relatively high. For some people who are too thin, too high, or not suitable for full femtosecond laser surgery, they can also choose hemifemtosecond laser surgery treatment. The choice of a specific procedure requires a series of examinations at the hospital, and the most suitable treatment plan, taking into account your own examination results and financial level.