Ursell P G, Spalton D J, Pande M V
Department of Ophthalmology, St. Thomas' Hospital, London, United Kingdom.
J Cataract Refract Surg. 1997 Dec;23(10):1532-8. doi: 10.1016/s0886-3350(97)80025-9.
To ascertain whether the movement of the anterior capsule is different with intraocular lenses (IOLs) made from different materials.
Department of Ophthalmology, St. Thomas' Hospital, London, United Kingdom.
Ninety patients had standardized extracapsular cataract extraction, continuous curvilinear capsulorhexis (CCC), and confirmed in-the-bag IOL placement performed by the same surgeon. Patients were randomized to receive a three-piece, 6.0 mm IOL made of poly(methyl methacrylate) (PMMA), silicone, or AcrySof, all with PMMA haptics, and received standardized postoperative medication. Except for material, the IOLs were of the same design. On days 7, 30, 90, 180, and 360, digitized retroillumination images were taken of the IOL. The movement of the anterior capsule between each visit was analyzed.
The amount of anterior capsule movement was significantly less in the AcrySof lens group than in the PMMA or silicone lens groups in the first year after surgery (P = .0001).
The AcrySof lens with PMMA haptics produced significantly less anterior capsule movement than PMMA or silicone lenses and thus is likely to cause less IOL decentration and capsular phimosis.
确定不同材料制成的人工晶状体（IOL）在前囊膜运动方面是否存在差异。
英国伦敦圣托马斯医院眼科。
90例患者接受了由同一位外科医生进行的标准化囊外白内障摘除术、连续环形撕囊（CCC），并确认人工晶状体植入囊袋内。患者被随机分配接受由聚甲基丙烯酸甲酯（PMMA）、硅胶或AcrySof制成的三件式、6.0毫米人工晶状体，所有人工晶状体均带有PMMA襻，并接受标准化的术后药物治疗。除材料外，人工晶状体设计相同。在术后第7天、30天、90天、180天和360天，对人工晶状体进行数字化后照图像采集。分析每次随访之间前囊膜的运动情况。
术后第一年，AcrySof晶状体组的前囊膜运动幅度明显小于PMMA或硅胶晶状体组（P = .0001）。
带有PMMA襻的AcrySof晶状体产生的前囊膜运动明显少于PMMA或硅胶晶状体，因此可能导致更少的人工晶状体偏心和囊膜缩窄。
