The important thing of orthokeratology is brand selection and re-examination of myopia prevention and control effect. Jinan Good Vision has been doing orthokeratology for ten years, and there are seven or eight brands. Domestic orthokeratology lenses are like Dream David and Punot, and imported orthokeratology lenses are like Korea Lucid, American CRT, Euclid and Japan Alpha. And the optometrist is also responsible for cleaning the lenses free of charge every month.