眼睑上的

例句：

1. 1. The doctor examined the patient's eye and found a small tumor on the sclera.
   医生检查了患者的眼球，发现眼白上有一个小肿瘤。
2. 2.Sclera is the outer layer of the eyeball that provides support and protection.
   巩膜是眼球外层，提供支撑和保护。
3. 3. The sclera is often used as an indicator of ageing in the human eye.
   巩膜常常被用作人类眼睛衰老的指示。