How does orthokeratology control myopia

Orthokeratology lenses can improve myopia by changing the shape of the cornea.

After myopia, the refractive power of the cornea is abnormal, and parallel light cannot be focused on the retina, resulting in the inability to see distant objects. Orthokeratology lenses can change the shape of the cornea to change the refractive power of the cornea, so that light entering the eye focuses on the retina,

thus correcting vision.