secondary vitreous

例句：

1. 1.The surgeon removed the secondary vitreous to repair the damaged retina.
   外科医生移除了次级玻璃体以修复受损的视网膜。
2. 2. The patient had undergone a successful surgery to remove the secondary vitreous.
   患者成功接受了手术，移除了次级玻璃体。
3. 3.The doctor explained that the removal of the secondary vitreous was necessary for the patient's recovery.
   医生解释说，移除次级玻璃体对患者的康复是必要的。