Birinci H, Kuruoğlu S, Oge I, Oge F, Acar E
Department of Ophthalmology, Medical Faculty, University of Ondokuz Mayis, Samsun, Turkey.
J Cataract Refract Surg. 1999 Aug;25(8):1140-6. doi: 10.1016/s0886-3350(99)00119-4.
To determine the effect of intraocular lens (IOL) type and anterior capsulectomy technique on the incidence of posterior capsule opacification.
Department of Ophthalmology, Medical Faculty, University of Ondokuz Mayis, Samsun, Turkey.
Three hundred two eyes of 294 patients were examined retrospectively after IOL implantation in the capsular bag performed between February 1991 and November 1996. Patients were divided into 3 groups according to IOL type: poly(methyl methacrylate) (PMMA); heparin-surface-modified PMMA (HSM PMMA); plate-haptic silicone. Envelope capsulectomy or continuous curvilinear capsulorhexis (CCC) was used. Mean follow-up was 27 months (range 12 to 33 months).
Posterior capsule opacification developed in 47 cases (15.6%): 21.7% in the PMMA lens group after planned extracapsular cataract extraction (ECCE), 17.4% in the HSM PMMA lens group after planned ECCE, and 7.7% in the plate-haptic silicone lens group after phacoemulsification. Posterior capsule opacification occurred less in patients who had anterior capsulectomy using the CCC technique (11.5%) than in those having an envelope capsulectomy (24.5%) (P < .05). Posterior capsule opacification was significantly less in eyes with a capsular-bag-fixated plate-haptic silicone lens than in those with a PMMA or HSM PMMA IOL (P < .05).
This study demonstrated that the anterior capsulectomy technique and the IOL type influence the incidence of PCO.
确定人工晶状体（IOL）类型和前囊膜切除术技术对后囊膜混浊发生率的影响。
土耳其萨姆松市于尔杜兹马伊斯大学医学院眼科。
回顾性检查了1991年2月至1996年11月期间在囊袋内植入IOL的294例患者的302只眼。根据IOL类型将患者分为3组：聚甲基丙烯酸甲酯（PMMA）；肝素表面改性PMMA（HSM PMMA）；板袢硅胶。采用信封式囊膜切除术或连续环形撕囊术（CCC）。平均随访时间为27个月（范围12至33个月）。
47例（15.6%）发生了后囊膜混浊：计划外白内障囊外摘除术（ECCE）后PMMA晶状体组为21.7%，计划外ECCE后HSM PMMA晶状体组为17.4%，超声乳化术后板袢硅胶晶状体组为7.7%。采用CCC技术进行前囊膜切除术的患者后囊膜混浊发生率（11.5%）低于采用信封式囊膜切除术的患者（24.5%）（P < 0.05）。囊袋固定的板袢硅胶晶状体眼的后囊膜混浊明显少于PMMA或HSM PMMA IOL眼（P < 0.05）。
本研究表明前囊膜切除术技术和IOL类型会影响后囊膜混浊的发生率。
