Artisan有晶状体眼人工晶状体植入术后远期角膜内皮细胞的变化

背景 Artisan有晶状体眼人工晶状体(pIOL)植入矫正高度近视术后早期是安全、有效的,由于人工晶状体位于前房,术后对角膜内皮的影响值得关注. 目的 研究Artisan pIOL矫正高度近视术后角膜内皮细胞密度(ECD)和形态的长期变化.方法 对2005年1月至2008年12月在广东省人民医院眼科行Artisan pIOL植入术的高度近视27例51眼进行回顾性分析,采用角膜内皮计数仪测定角膜中央区的角膜ECD,评估计算细胞面积变异系数(CV)和细胞面积标准差(SD),比较并分析术前和术后6个月及1、2、3、4、5、6年上述各指标的变化,计算ECD丢失率(术前ECD-术后ECD)/术前ECD× 100％]. 结果 术后6年时,34眼BCVA≥1.0,14眼BCVA较术前提高,8眼BCVA较术前降低;平均眼压为(14.23±2.14) mmHg.术眼术前平均ECD为(3 184.05±.233.55)/mm2,术后6个月及术后1、2、3、4、5、6年ECD平均丢失率分别为2.34％、5.32％、6.32％、8.06％、12.59％、15.63％和19.49％.术眼术前细胞面积CV和细胞面积SD分别为37.17±7.12和118.77±21.39,术后6年时分别为32.24±4.62和125.60±18.49.不同时间点细胞面积CV和SD总体比较,差异均有统计学意义(P=0.000、0.036).术眼术后出现局限性虹膜色素脱失者8眼,发生IOL偏位者6眼,术后1个月出现一过性高眼压者3眼,出现黄斑出血者2眼. 结论 Artisan pIOL植入术后随着时间推移ECD逐渐下降,且角膜内皮细胞形态进行重构,增加了细胞的稳定性,因此Artisan pIOL术后对术眼角膜内皮细胞的长期影响值得关注.

Long-term changes of corneal endothelial cells following Artisan phakic intraocular lens implantation

Background Artisan phakic intraocular lens (pIOL) implantation was demonstrated to be safe and effective for the correction of high myopia in short-term.However,long-term corneal endothelium status after operation should be concerned.Objective This study was to investigate the long-term changes of corneal endothelial cell density (ECD) and morphology following Artisan pIOL implantation for the correction of high myopia.Methods Fifty-one eyes of 27 patients who received Artisan PIOL implantation for high myopia from January 2005 to December 2008 were retrospectively analyzed.The central corneal ECDs were detected by corneal endothelial cell counter before surgery and 6 months and 1 year,2,3,4,5,6 years after surgery,and the coefficient of variation (CV) and standard deviation (SD) of cellular area were evaluated.ECD loss rate with time lapse was calculated (preoperative ECD-postoperative ECD]/preoperative ECD× 100％).Results Six years after surgery,there were 34 eyes with BCVA ≥ 1.0,14 eyes with BCVA higher than preoperative and 8 eyes with BCVA lower than preoperative.The mean intraocular pressure was (14.23±2.14)mmHg 6 years postoperative.The preoperative mean ECD was (3 184.05±233.55)/mm2,and the ECD was gradually reduced over time with the cell loss 2.34％ in 6 months,5.32％ in 1 year,6.32％ in 2 years,8.06％ in 3 years,12.59％ in 4 years,15.63％ in 5 years and 19.49％ in 6 years after operation.Before surgery,The mean CV of cellular area was 37.17±7.12,and the SD of cellular area was 118.77±21.39,and those 6 years after surgery were 32.24 ±4.62 and 125.60± 18.49,respectively.The mean CV and SD of cellular area were significantly different among different time points (P =0.000,0.036).Eight eyes with localized iris depigmentation,6 eyes with IOL dyssymmetry,3 eyes with transient high intraocular pressure and 2 eyes with Macular hemorrhage were obtained after surgery.Conclusions Corneal endothelial cells appear obvious changes in both number and morphology after Artisan pIOL implantation in high myopia.ECD is gradually reduced with time lapse,and the shape of the cells occur remodeling during 6-year fellow-up duration.Overall,endothelial specular microscopy is mandatory before and after surgery for a long term.