The "OK mirror" seen in the market is actually a orthokeratology mirror, which looks like a contact lens. The difference with contact lenses is that the material is hard, breathable and has a certain anti-myopia effect. Orthokeratology mirror is also called orthokeratology mirror, or ok mirror for short. Is to wear a hard contact lens with high oxygen permeability every night. The special design reshapes the surface of our cornea, thus achieving the effect of correcting vision during the day. It will not directly contact our cornea when shaping, and there is a layer of tears between our plastic mirror and cornea.

Create some gaps between the lens and the cornea, and use the role of tears to achieve the effect of "orthopedic". But please note that this deformation is reversible. That is to say, when sleeping at night, the cornea is induced to deform, and it will slowly rebound back to its original shape after a day, which is not lasting or permanent.

Therefore, OK glasses can't completely treat and correct children's myopia, and the phenomenon of vision rebound may occur after stopping using them. This is the first point.

Second, a large number of statistics show that OK glasses can delay the development of myopia.