超声生物显微镜与IOL-Master测量人眼睫状沟直径的比较性研究

目的:比较分析超声生物显微镜(ultrasound biomicroscopy,UBM)与IOL-Master测量人眼睫状沟直径的差异,为更准确地计算有晶状体眼后房型人工晶状体植入术(phakicposterior chamber intraocular lens,PPCIOL)也称为可植入的接触镜(implantable contact lens,ICL)的直径提供客观依据(以下简称ICL),从而有效减少术后并发症。方法:选取植入ICL术后1mo的高度近视眼患者32例(60眼)和正视对照组人群28例(48眼),分别作为实验组和对照组,对照组要求排除任何眼科手术史。应用UBM分别测量实验组和对照组的睫状沟直径;应用IOL-Master测量实验组和对照组的角膜横径即水平白到白的距离(whitetowhite,W-W),将所得的数据进行统计学分析。结果:植入ICL后1mo患者的UBM测得的睫状沟直径与IOL-Master测得的W-W值比较其差异有统计学意义(t=2.023,1.988;P<0.05);健康人眼的UBM测得的睫状沟直径与IOL-Maste测得的W-W值比较其差异有统计学意义(P<0.05);ICL术后患者与健康眼的UBM测得的睫状沟直径值比较其差异无统计学意义;二者的IOL-Master测得的W-W值比较其差异也无统计学意义。结论:UBM可以作为测量人眼睫状沟直径的工具;应用IOL-Master眼外测得W-W值与UBM测得的睫状沟直径值是有区别的,我们更倾向于应用UBM测得的值;人眼是存在解剖变异的,这些变异会增加ICL植入的危险性。

Comparison research on ultrasound biomicroscopy and IOL-Master measuring ciliary sulcus diameter

AIM:To compare the distant of S-S and W-W by ultrasound biomicroscopy (UBM) and IOL-Master for obtaining more accurate diameter of phakic posterior chamber intraocular lens (PPC),also called implantable contact lens (ICL).·METHODS:Thirty-two high myopia cases (60 eyes) treated with ICL were as experimental group,and 28 normal cases (48 eyes) without any operation as controls.Ciliary sulcus diameter measured by UBM was denoted by S-S,while,IOL-Master was used to measure the corneal diameter/white to white distant and the records were denoted by W-W.The data were analyzed with statistical method.·RESULTS:There was an excellent correlation between UBM and IOL-Master for the S-S and W-W in the patients after ICL operation (t=2.023,1.988;P<0.05).The mean values of the S-S measured by UBM and IOL-Master were,as follows,15.96±9.6mm and 11.75±6.9mm.The mean differences of between UBM and IOL-Master measurements were 0.30±0.40mm,and they proved no statistically significance (t=0.002,0.180;P>0.05).·CONCLUSION:UBM can be a good way to measure ciliary sulcus diameter.The values of W-W and S-S measured by IOL-Master have some differences,and we are more likely to choose S-S value.Anatomical variation will increase risk in ICL operation.·