The ophthalmologist examined each optic carefully before approving the pilot's medical certificate.

眼科醫師在核准飛行員的體檢證明前，仔細檢查了每一隻眼睛。

After staring at spreadsheets all day, my optics felt tired and dry.

盯著試算表看了一整天後，我的眼睛又累又乾。

The safety manual requires workers to protect their optics with goggles in the warehouse.

安全手冊規定倉庫員工必須戴護目鏡保護眼睛。