keratoconus
noun [ U ] medical specialized uk/ˌke.rə.təˈkəʊ.nəs/ us/ˌker.ə.t̬əˈkoʊ.nəs/
圆锥形角膜
an eye problem that changes the shape of the cornea (= the transparent outer covering of the eye) and affects the ability to see normally
In advanced cases of keratoconus, corneal transplant surgery is required. 严重圆锥形角膜需要做角膜移植。