Ozdemir Havva G
Medicosocial Health Center, Cukurova University, Adana, Turkey.
Can J Ophthalmol. 2007 Dec;42(6):849-51. doi: 10.3129/i07-157.
This study was designed to determine the effect of 2 different irrigation/aspiration techniques on the formation of posterior capsule opacification (PCO) after cataract surgery in which CeeON Edge 911A (Pharmacia, Sweden) sharp-edged silicone lenses were implanted.
In this prospective study, 60 eyes from 39 patients, average age 65 (range: 46-85) years, were analyzed. Lens extraction was performed by phacoemulsification, and CeeON Edge 911A intraocular lenses were implanted. Two different irrigation/aspiration techniques were used in which the cortex of 32 eyes was removed by coaxial irrigation/aspiration (this group was designated group I) and the cortex of 28 eyes was removed by bimanual irrigation/aspiration (this group was designated group II). Secondary cataract formation and visual acuity were evaluated and compared in both groups.
The average follow-up time was 44 (SD 11) months. In group I, secondary cataract formation causing 2 lines of decrease on visual acuity was observed in 1 eye 8 months after the operation. The secondary cataract developed in the form of cortex migration. This patient was treated with laser (Neodymium: Yttrium Aluminum Garnet [Carl Zeiss Meditech, Germany]) capsulotomy at the time of detection. Best corrected visual acuity for all eyes was 0.5 and higher; postoperative refractive error ranged between +1.0 and -2.0 diopters.
Although CeeON Edge 911A silicone lenses with sharp edge prevent formation of PCO very effectively, in 1 eye in the coaxial irrigation/aspiration group, 2 lines of decrease on visual acuity were observed due to PCO. However, we did not find any significant difference between the 2 irrigation/aspiration techniques with respect to PCO formation. In terms of complete removal of the cortical material, the bimanual irrigation/aspiration technique was found to be superior to the coaxial irrigation/aspiration technique because of the better accessibility to all areas of the capsular bag.
本研究旨在确定两种不同的冲洗/抽吸技术对白内障手术后后囊膜混浊（PCO）形成的影响，手术中植入了CeeON Edge 911A（瑞典法玛西亚公司）锐边硅胶人工晶状体。
在这项前瞻性研究中，分析了39例患者的60只眼睛，平均年龄65岁（范围：46 - 85岁）。通过超声乳化进行晶状体摘除，并植入CeeON Edge 911A人工晶状体。使用了两种不同的冲洗/抽吸技术，其中32只眼睛的皮质通过同轴冲洗/抽吸去除（该组指定为I组），28只眼睛的皮质通过双手冲洗/抽吸去除（该组指定为II组）。对两组的继发性白内障形成和视力进行评估和比较。
平均随访时间为44（标准差11）个月。在I组中，术后8个月有1只眼睛观察到继发性白内障形成导致视力下降2行。继发性白内障以皮质迁移的形式发展。该患者在检测时接受了激光（钕：钇铝石榴石[德国卡尔蔡司医疗技术公司]）囊切开术治疗。所有眼睛的最佳矫正视力均为0.5及以上；术后屈光不正范围在+1.0至 - 2.0屈光度之间。
尽管带有锐边的CeeON Edge 911A硅胶人工晶状体非常有效地防止了PCO的形成，但在同轴冲洗/抽吸组的1只眼睛中，观察到由于PCO导致视力下降2行。然而，我们没有发现两种冲洗/抽吸技术在PCO形成方面有任何显著差异。在完全清除皮质物质方面，由于双手冲洗/抽吸技术对囊袋所有区域的可达性更好，因此发现其优于同轴冲洗/抽吸技术。
