人工晶状体的非球面性对人眼垂直慧差的影响  

Analysis of the aspherical characteristics of intraocular lens on vertical coma aberration

作　　者：王莹[1] 马忠旭[1] 刘汝瑜[1] 张伟[1] 

机构地区：[1]天津医科大学眼科临床学院天津市眼科医院天津市眼科研究所,300020

出　　处：《中国实用眼科杂志》2012年第1期56-60,共5页Chinese Journal of Practical Ophthalmology

摘　　要：目的研究白内障超声乳化吸除术植入不同非球面性人丁晶状体（intraoeular lens，IOL）对垂直慧差（vertical coma aberrations）的影响。方法前瞻性研究。选取天津眼科医院2010—2011年单纯性老年性自内障患者116只眼，随机分成4组，31只眼植入球面IOL Sensar AR40e，29只眼植入零球差IOL Akreos AO，25只眼植入零球差IOL Softec HD，31只眼植入负性非球面IOL Tecnis ZA9003。术后3-4个月随访，使用iTrace像差仪采集患者在5．0mm瞳孔下的垂直慧差，水平慧差，球差的均方根（root mean square，RMS）。应用Pentaeam三维眼前段分析仪测量IOL的倾斜度与偏心量。比较各组间的垂直慧差，水平慧差和球差以及垂直慧差与IOL的倾斜度和偏心量之间的关系。结果垂直慧差和球差在球面IOL组最高，零球差IOL组次之，负性非球面IOL组最低（F=7．276，P=0．000；F=107．2，P=0．000）。水平慧差在各组间差异无统计学意义（P〉0．05）。4组垂直慧差与IOL的倾斜度和偏心量的相关性无统计学意义（P〉0．05）。结论IOL的非球面性变化导致垂直慧差的改变，10L一定限度内的倾斜和偏心对垂直慧差的影响很小。球面IOL与非球面IOL相比能诱导更多的垂直慧差，从而有助于改善术后近视力和阅读能力。Objective To analyze the effect of asphericity of intraocular lenses （IOLs） on vertical coma aberration after phacoemulsification surgery and IOLs implantation. Methods It was a prospective clinical study. A total of 116 eyes of 78 patients were with IOLs implantation and 3 to 4 months after surgery was analyzed in this study, including 31 eyes with spherical IOL of Sensar AR40e, 54 eyes with aspheric aberration-free IOLs of Akreos AO （29 eyes） and Softec HD （25 eyes） and 31 eyes with aspheric IOL of Tecnis ZA9003 with negative spherical aberration. At postoperative follow-up visits, maximum pupil dilation was achieved and aberrometry was performed using an iTrace aberrometer with a pupil scan size of 5.0 mm. Data on vertical coma, horizontal coma, and spherical aberration were extracted. Tilt and decentration of the IOLs were measured using Scheimpflug photography （Pentacam, Oculus） and analyzed with Image-Pro Plus 6.0 software. Results Vertical coma and spherical aberration values were highest with the spherical IOLs and lowest with the aspheric IOLs （P =0.000 and P =0.000, respectively）. There was no difference in horizontal coma aberration between the 4 IOL groups. There was no correlation between tilt, decentration and vertical coma aberration （P 〉0.05）, Conclusions Conventional spherical IOLs induce more vertical coma than aspheric IOLs and may help uncorrect near vision.

关 键 词：人工晶状体 非球面性 垂直慧差 水平慧差 球差 

分 类 号：R776.1[医药卫生—眼科]