crista marginalis

例句：

1. 1.The doctor examined the patient's eyes and found that he had a marginal cataract.
   医生检查了病人的眼睛，发现他有边缘性白内障。
2. 2. The researcher studied the effects of light on the marginal crystallinity of the eye.
   研究者研究了光线对眼睛边缘晶体化的影响。
3. 3.In some cases, the marginal crystallinity can be improved by using artificial tears.
   在某些情况下，通过使用人工泪液可以改善边缘晶体的透明度。