Fujikawa Azusa, Mohamed Yasser Helmy, Kinoshita Hirofumi, Tsuiki Eiko, Kitaoka Takashi
Department of Ophthalmology and Visual Sciences, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, Nagasaki, 852-8501, Japan.
Department of Ophthalmology, EL-Minia University Hospital, EL-Minia, Egypt.
Int Ophthalmol. 2018 Jun;38(3):1111-1117. doi: 10.1007/s10792-017-0567-6. Epub 2017 May 22.
To evaluate the possible risk factors for posterior chamber intraocular lens dislocation either in-the-bag (ITB) dislocation or out-of-the-bag (OOTB) dislocation.
All subjects who sustained late intraocular lens dislocation from January 2011 until May 2014 and presented to the Nagasaki University Hospital were included in the study. This study is a retrospective evaluation of all cases of posterior chamber intraocular lens dislocation in this defined period. All cases had history of uncomplicated cataract surgery with implantation of posterior chamber intraocular lens. Patients with history of trauma (before cataract surgery) were excluded from the study. The main outcome measures of the study were evaluation of risk factors for dislocation of both groups and determination of the interval between cataract surgery and dislocation.
Thirty-six eyes (69.23%) suffered ITB dislocation, and 16 eyes (30.77%) suffered OOTB dislocation. Intraocular lens dislocation was common in males (42 eyes = 80.77%) than females (10 eyes = 19.23%). Patients of ITB dislocation group were significantly older than OOTB dislocation group at the time of initial intraocular lens implantation and at the time of exchange surgery.
The most prevalent risk factors in both groups were axial myopia in 18 eyes (34.61%), vitreoretinal surgery in 16 eyes (30.77%), and pseudoexfoliation in 13 eyes (25%) in all cases.
评估后房型人工晶状体发生囊袋内（ITB）脱位或囊袋外（OOTB）脱位的可能危险因素。
纳入2011年1月至2014年5月间在长崎大学医院就诊的所有发生人工晶状体晚期脱位的患者。本研究是对这一特定时期内所有后房型人工晶状体脱位病例的回顾性评估。所有病例均有单纯白内障手术并植入后房型人工晶状体的病史。有外伤史（白内障手术前）的患者被排除在研究之外。本研究的主要观察指标是评估两组脱位的危险因素以及确定白内障手术与脱位之间的间隔时间。
36只眼（69.23%）发生ITB脱位，16只眼（30.77%）发生OOTB脱位。人工晶状体脱位在男性中（42只眼 = 80.77%）比女性中（10只眼 = 19.23%）更常见。ITB脱位组患者在初次人工晶状体植入时和置换手术时的年龄显著大于OOTB脱位组。
在所有病例中，两组最常见的危险因素为轴性近视（18只眼，34.61%）、玻璃体视网膜手术（16只眼，30.77%）和假性剥脱（13只眼，25%）。
