Femtosecond laser gives you a better choice. It initially served the US military, passed a lot of evaluation tests, and was certified by NASA in 2007. It is the only myopia surgical equipment approved for astronauts at present. It is understood that in the United States, soldiers, pilots, navies and snipers all use femtosecond laser technology to improve their eyesight in order to better complete their tasks.

Moreover, femtosecond laser can flexibly set surgical parameters according to individual differences, such as the thickness and diameter of corneal flap, which can be tailored, and the boundary of "no knife in the whole process" is more uniform and safer, and nerve repair is faster. It can be seen that the surface of corneal flap made by each eye is smooth, uniform and perfect, which is almost close to the original state of cornea.