Implantation of foldable posterior chamber intraocular lens in aphakic vitrectomized eyes without capsular support

ABSTRACT Purpose: To evaluate the outcomes of three different surgical techniques for foldable posterior chamber intraocular lens (PCIOL) implantation in vitrectomized eyes without capsular support. Methods: A total of 60 patients with aphakic and vitrectomized eyes without capsular support were enrolled. All patients underwent three-piece foldable PCIOL implantation into the posterior chamber through a small corneal incision. Transscleral fixation (TSF), iris fixation (IF), and intrascleral tunnel fixation (ISF) surgical techniques were performed. Results: Postoperative PCIOL subluxation or dislocation occurred in one case in the TSF group and two cases in the ISF group. Intraoperative PCIOL dislocation occurred in two patients in the IF group. The incidence of temporary postoperative complications, such as mild intraocular hemorrhage and cystoid macular edema, was higher in the ISF group. No statistically significant difference in PCIOL-related astigmatism was observed between groups. Visual acuity improved in all groups. Conclusions: Postoperative outcomes were comparable between TSF, IF, and ISF for PCIOL in vitrectomized eyes without capsular support.

摘要
目的：评估三种不同手术方式用于无囊膜支撑的玻璃体切除术后眼球植入折叠式后房型人工晶状体（PCIOL）的临床效果。
方法：本研究共纳入60例无晶状体且无囊膜支撑的玻璃体切除术后眼球患者。所有患者均通过角膜微小切口行三片式折叠式后房型人工晶状体植入术，分别采用经巩膜固定术（TSF）、虹膜固定术（IF）以及巩膜隧道内固定术（ISF）三种手术方式。
结果：经巩膜固定术组术后出现1例人工晶状体半脱位或脱位，巩膜隧道内固定术组出现2例；虹膜固定术组术中出现2例人工晶状体脱位。巩膜隧道内固定术组术后一过性并发症（如轻度眼内出血、囊样黄斑水肿）的发生率更高。各组间人工晶状体相关性散光差异无统计学意义。所有组别患者术后视力均有所提升。
结论：对于无囊膜支撑的玻璃体切除术后眼球，经巩膜固定术、虹膜固定术与巩膜隧道内固定术三种方式植入人工晶状体的术后效果相当。