CEDICT
Wiktionary
位于眼前房与玻璃体间的透明双凸体,可随视物的远近改变凸出的程度使物像恰好落在视网膜上,形成眼的折光机能部分。
重編國語辭典
眼球的主要屈光结构
維基詞典
Through the lens the image was inverted.
Source: Tatoeba
Tom looked at his reflection in the mirror.