This is traumatic and irreversible. Moreover, 18 years old must be stable for more than two years, and people with high myopia may not be able to achieve the best results after surgery.

Orthokeratology is to reshape the cornea by hydraulic pressure, so that the object image falls on the retina, and then the object can be seen clearly.

It is non-traumatic and reversible. Suitable for people aged six to forty, with controllable degree development.

In other words, myopia surgery is permanent, and orthokeratology is not permanent.

However, at present, many countries in the world have stopped myopia surgery because there are many complications.

Orthokeratology is safer than surgery. It is also the most advanced method to correct myopia in the world. ~~