2 sentences

1. 角膜移植手术很成功。

   jiǎo​mó yí​zhí shǒu​shù hěn chéng​gōng.

   The corneal transplant surgery was very successful.

   Source: Dong Chinese Dictionary

2. 眼球表面覆盖着一层薄薄的角膜。

   yǎn​qiú biǎo​miàn fù​gài zhe yī céng báo báo de jiǎo​mó.

   The surface of the eyeball is covered by a thin layer of cornea.

   Source: Dong Chinese Dictionary