However, I also advised the landlord not to do it. My neighbor is a doctor in the Second Hospital, and she won't let me do it. She said that the operation was immature, and many side effects would not appear until ten or twenty years later, such as retinal detachment, which was very serious. If you are still at school, you'd better not do it. A girl I know has done it twice. If her eyesight drops again, she will not be able to do it, and her cornea will be hurt. Moreover, the landlord's education is quite high, so do a good job of consultation before making a decision.