Alpha Orthokeratology can customize lenses. Alpha orthokeratology is a special kind of orthokeratology. By using specific lens design and oxygen permeable materials, the curvature of cornea can be changed, thus correcting vision problems such as myopia, hyperopia and astigmatism. Because everyone's eyeball shape and vision problems are different, the lens of Alpha Orthokeratology needs to be customized according to the individual's eyeball shape and optometry data, so Alpha Orthokeratology can customize the lens. Lenses are transparent materials with one or more curved surfaces made of optical materials such as glass or resin. After polishing, they are often assembled with spectacle frames to correct users' vision and obtain clear vision.