I am 22 years old, myopia more than 600 degrees, want to use laser treatment

Excimer laser surgery is technically good and safe, and its efficacy has been recognized.

Generally speaking, if you are over 18 years old and have stable vision, your vision will not rebound after surgery. Because from the principle of surgery, laser myopia surgery is based on the degree of myopia you need to correct, under the premise of ensuring sufficient safety, cut off the corresponding thickness of the cornea, after the operation cut off the cornea will not grow back, so the degree of correction will not recur.