Krause U, Alanko H I
Acta Ophthalmol (Copenh). 1986 Jun;64(3):338-43. doi: 10.1111/j.1755-3768.1986.tb06930.x.
A boy aged 3 years had a Worst Medallion intraocular lens with loops made of nylon 6 implanted in his right eye after aspiration of traumatic cataract. Post-operatively, the eye was irritated and showed increased tendency to secondary membrane formation. The patient was lost to follow-up 3 months post-operatively. He returned 5 years later because of 4 days of pain and redness in his right eye. On examination, the optic part of the intraocular lens was seen to lie free in the anterior chamber. The loops were broken near their insertions in the lens body. The distal ends of the broken loops could not be detected in the pupillary region. No traces of the iris fixation suture were to be seen. The lens was removed and subjected to scanning electron microscopy which revealed extensive biodegradative changes in the 3 loop stumps, the 4th being totally dissolved. The young age of the patient and the chronic inflammation may have had an accelerating effect on the nylon degradation. We conclude that children with eyes implanted with nylon-loop lenses should stay under regular ophthalmological control.
一名3岁男孩在外伤性白内障吸出术后，右眼植入了带有尼龙6制成的袢的Worst Medallion人工晶状体。术后，眼睛出现刺激症状，继发膜形成的倾向增加。患者在术后3个月失去随访。5年后，他因右眼疼痛和发红4天前来复诊。检查时，发现人工晶状体的光学部分游离于前房。袢在晶状体主体的插入处附近断裂。在瞳孔区域未检测到断裂袢的远端。未见虹膜固定缝线的痕迹。取出晶状体并进行扫描电子显微镜检查，结果显示3个袢残端有广泛的生物降解变化，第4个袢完全溶解。患者年龄小和慢性炎症可能对尼龙降解有加速作用。我们得出结论，植入尼龙袢人工晶状体的儿童应定期接受眼科检查。
