白内障人工晶状体植入术前后角膜厚度和前房深度及前房角的改变

Study of anterior chamber angle and depth,corneal thickness after implantation by ultrasound biomicroscopy

目的:探讨超声乳化白内障吸除折叠式人工晶状体植入术前后,术眼前房深度和角膜厚度及前房角结构的改变。方法:对20例20眼老年性白内障患者行超声乳化白内障吸除折叠式人工晶状体植入术,分别于术前和术后1wk使用超声生物显微镜量化测量前房深度、角膜厚度和前房角宽度。结果:全部患者术后1wk角膜厚度明显增加,前房深度明显增大;500μm处前房角开放距离(AOD500)及ACA角度均与术前值比较明显增加,且均P<0.01。结论:超声乳化白内障吸除折叠式人工晶状体植入术可以使角膜厚度显著增加;可显著增加老年性白内障患者的前房深度及房角宽度。

AIM：To study the changes anterior chamber angle（ACA）,corneal thickness and depth of anterior chamber after phacoemulsification and foldable intraocular lens（IOL） implantation by ultrasound biomicroscopy. METHODS：Small-incision phacoemulsification and foldable IOL implantation were performed in 20 eyes of 20 senior patients, and the changes of corneal thickness, ACA and anterior chamber depth were determined quantitatively by ultrasound biomicroscopy before and one week after the surgery. RESULTS：In all patients, the anterior chamber angle was widened significantly at one week after surgery.The measurements of AOD500（angle-opening distance at 500μm from the scleral spur） and ACA increased significantly after the operation.The mean post/operative corneal thickness was significant increased. A significant negative correlation existed between preoperative and postoperative data（P〈0.01）. CONCLUSION：Small-incision cataract surgery increases the thickness of corneal, deepens the anterior chamber and widens the ACA in senior patients. 