Prices range from seven or eight thousand to tens of thousands, and materials, design and technology will affect prices.

Orthokeratology is generally performed one-to-one according to the curvature of the individual cornea.

The refractive state of cornea can be changed physically, thus improving naked eye vision.

Domestic and imported work, materials and oxygen permeability are different, and the manufacturing process is much worse.

Imported products are better, such as Wilma. Although they are expensive, they are safe to wear.