coloboma of eyelid

例句：

1. 1.The coloboma on his right eyelid was causing him discomfort.
   他右眼上的裂隙让他感到不适。
2. 2.The doctor carefully examined the coloboma and determined its cause.
   医生仔细检查了裂隙，并确定了其原因。
3. 3. The patient had to wear a patch over the coloboma to protect the eye.
   患者不得不戴上贴片保护眼睛。