Hello, corneal plastic lens is a kind of hard contact lens specially designed. You can get clear vision only by wearing glasses at night, and you don't need to wear any glasses during the day. It can't fundamentally solve the degree of myopia, so you need to wear it every night so that you can restore better vision during the day. The price of this pair of glasses ranges from more than 3000 to 10000. I suggest you go to a regular hospital for fitting, because orthokeratology is a third-class medical device, and you need to check it regularly after fitting.