手术复位脱位的晶体囊张力环
Surgical repositioning of dislocated capsular tension rings作者机构：Credit Valley EyeCare 3200 Erin Mills Parkway Mississauga Ont. L5L 1W8 Canada
出 版 物：《世界核心医学期刊文摘(眼科学分册)》 (Digest of the World Core Medical Journals)
年 卷 期：2006年第4期
页 面：48-48页
学科分类：1002[医学-临床医学] 100212[医学-眼科学] 10[医学]
摘 要：Purpose: To present techniques and results of surgical repositioning of subluxed and dislocated capsular tension rings (CTRs). Design: Retrospective interventional case series. Participants: Eleven patients with a previously implanted CTR in-the-bag for zonularweaknesswho presentedwith CTR-intraocular lens (IOL)-capsular bag decentration who underwent surgical repositioning. Methods: Data from 11 patients who underwent surgical repositioning were evaluated retrospectively for underlying diagnosis, interval between initial surgery and decentration, surgical technique, clinical results, and complications. Main Outcome Measures: Capsular tension ring-IOL-capsular bag centration, final best-corrected visual acuity (BCVA), and surgical complications. Results: Of the 11 patients with CTR decentration, 3 had it early in the postoperative period, and 8 had it late. Mean (±standard deviation) durations from cataract extraction and CTR implantation to surgical repositioning were 6.1±7.9 months for those with decentration early and 49.6±15.3 months for late decentrations (overall range, 0.7-74.7). Of the 11 patients, 7 had pseudoexfoliation, and 4 of the 7 had associated glaucoma. Nine patients had subluxation of the CTR-IOL-capsular bag complex, which was managed by an anterior segment approach. A pars plana vitrectomy and levitation of the CTR was required in 2 patients due to complete dislocation of the CTR into the posterior vitreous. Surgical techniques for repositioning included single, double, or 3-point scleral suture loop fixation of the CTR through the capsular bag complex (8 eyes); use of the capsular tension segment (CTS) placed within the capsular bag for scleral suture fixation (2); or iris suture fixation of the IOL haptics (1)-. All patients achieved successful anatomical repositioning of the CTR-IOL-capsular bag complex. Mean preoperative BCVA improved from 20/100 to 20/40 postoperatively. After repositioning surgery, BCVA improved in 7 patients, was maintaine
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