A quantitative study of anterior chamber angle with ultrasound biomicroscopy after cataract surgery with phacoemulsification and foldable intraocular lens implantation
- VernacularTitle:超声生物显微镜量化观察超声乳化白内障吸除人工晶状体植入术后前房角的改变
- Author:
Xiao-Ping, GUO
;
Yan, GAO
;
Gang, CHEN
;
Xiang-Li, LIU
- Publication Type:Journal Article
- Keywords:
ultrasonography;
anterior chamber;
phacoemulsification;
intraocular lenses
- From:
International Eye Science
2006;6(3):531-533
- CountryChina
- Language:Chinese
-
Abstract:
AIM: To study the changes in anterior chamber angle after phacoemulsification and foldable IOL implantation with ultrasound biomicroscopy.METHODS: Small-incision phacoemulsification and foldable IOL implantation were performed in 50 eyes of 46 senior patients, and the changes of anterior chamber angle were determined quantitatively by using ultrasound biomicroscopy before and one month after the surgery.RESULTS: In all patients, the angle was widened significantly one month after the surgery (P＜0.01). The measurements of TIA500 ( trabecular-iris angle at 500μm from the scleral spur) , AOD250 (angle-opening distance at 250μm from the scleral spur) and AOD500 (angle-opening distance at 500μm from the scleral spur) increased significantly after the operation ( P＜ 0.01). The mean post/pre-operative TIA500ratio, AOD250 ratio and AOD500 ratio were 1.65 (1.12-4.91),1.81 (1.06-2.67) and 1.65 (1.01-2.76), respectively. A significant negative correlation existed between preoperative and postoperative data.CONCLUSION: Small-incision cataract surgery deepens the anterior chamber and widens anterior chamber angle significantly in senior patients. The narrower the preoperative angle, the higher ratio of post/preoperative ratio found.
