OK [--镜]

Jyutping O kei1 geng3
Pinyin ōu ㄎㄟˋ jìng

Definitions (Wiktionary)
  1. noun
    orthokeratology lens; contact lens that temporarily reshapes the cornea

OK鏡 [--镜]

Jyutping
Pinyin o k jìng

Definitions (CC-CEDICT)
  1. OK lens, orthokeratology contact lens that helps reshape the cornea in order to eliminate nearsightedness or myopia