There are many types of orthokeratology lenses in Ruipu, Baiyin Road, Lanzhou, and the price ranges from more than 3,000 to 1000. My children are equipped with Japanese brands, about 9000. Orthokeratology mirror is quite expensive, and nursing solution and artificial tears are used every day, which costs about 2000 yuan a year. And it is required to be below 600 degrees. . If you agree with my answer, please adopt it.