作者:宁琳,孔 珺,史铭宇,张劲松
作者单位:中国辽宁省沈阳市,中国医科大学附属第四医院眼科中心 辽宁省高校晶状体重点实验室
【摘要】 目的:比较分析超声生物显微镜(ultrasound biomicroscopy, UBM)与IOLMaster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(phakic posterior chamber intraocular lens, PPC IOL )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IOLMaster测量实验组和对照组的角膜横径即水平白到白的距离(white to white, WW),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IOLMaster测得的WW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IOLMaste测得的WW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IOLMaster测得的WW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IOLMaster眼外测得WW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。
【关键词】 超声生物显微镜; IOLMaster;睫状沟直径;角膜横径
Comparison research on ultrasound biomicroscopy and IOLMaster measuring ciliary sulcus diameter
Lin Ning, Jun Kong, MingYu Shi, JinSong Zhang
The Key Laboratory of Lens in Liaoning High Schools, Ophthalmology Center, the No.4 Affiliated Hospital, China Medical University, Shenyang 110001, Liaoning Province, China
AbstractAIM: To compare the distant of SS and WW by ultrasound biomicroscopy (UBM) and IOLMaster for obtaining more accurate diameter of phakic posterior chamber intraocular lens (PPC), also called implantable contact lens (ICL).
METHODS: Thirtytwo 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 SS, while,IOLMaster was used to measure the corneal diameter/white to white distant and the records were denoted by WW. The data were analyzed with statistical method.
RESULTS: There was an excellent correlation between UBM and IOLMaster for the SS and WW in the patients after ICL operation (t=2.023, 1.988; P<0.05). The mean values of the SS measured by UBM and IOLMaster were, as follows, 15.96±9.6mm and 11.75±6.9mm. The mean differences of between UBM and IOLMaster 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 WW and SS measured by IOLMaster have some differences, and we are more likely to choose SS value. Anatomical variation will increase risk in ICL operation.
KEYWORDS: ultrasound biomicroscopy; IOLMaster; SS; WW
Ning L, Kong J, Shi MY, et al. Comparison research on ultrasound biomicroscopy and IOLMaster measuring ciliary sulcus diameter. Int
J Ophthalmol(Guoji Yanke Zazhi)2008;8(11):22712273 0引言
目前,高度近视眼的矫正方法有很多种,角膜屈光手术已经为大多数患者所接受,但不免存在着各种各样的并发症。眼内屈光手术特别是有晶状体眼后房型人工晶状体植入术因为具有术前可预测性、可逆性,尤其是能够保持眼睛原有的调节力等优点而得到了越来越多眼科医生的重视,为了有效减少术后并发症,术前对人工晶状体尺寸的精确计算十分重要,本文针对如何更准确计算人工晶状体的尺寸进行研究。
1对象和方法
1.1对象 2008 02 08连续收集在中国医科大学附属第四院眼科施行有晶状体眼后房型人工晶状体植入术术后1mo的高度近视眼患者32例(60眼),其中女17例(30眼),年龄22~37(平均32.34±4.03)岁;男15例(30眼),年龄21~35(平均32.73±3.45)岁。排除标准为:患有除高度近视眼外其他器质性眼病者;术后有并发症如高眼压和白内障者。另收集正视眼对照组28例(48眼),其中男13例(23眼),女15例(25眼);年龄25~35(平均32.28±4.22)岁。高度近视眼的入选标准为近视屈光度>10.00D,散光屈光度<1.00D。
1.2方法
1.2.1电脑验光 应用电脑验光仪(型号TOPCON2000,日本TOPCON公司生产)对患者进行电脑验光,筛查出符合条件的高度近视眼患者和正视眼对照组。
1.2.2 UBM检查 应用UBM(型号ODM3000W,天津迈达科技有限公司生产)测量被检者睫状沟直径。测量时要求患者凝视探头,目的是保证探头方向与视轴方向一致,从而保证测量的准确性。其测量包括三个方位的扫描:正面扫描ICL,要求清晰显示瞳孔区的ICL及两侧的瞳孔缘,对正视眼的测量要求清晰显示两侧的瞳孔缘;扫描鼻侧的ICL,要求清晰显示出鼻侧完整的虹膜和睫状沟,对正视眼的测量要求清晰显示鼻侧的瞳孔缘和睫状沟;扫描颞侧的ICL,要求清晰显示出颞侧完整的虹膜和睫状沟,对正视眼的测量要求清晰显示颞侧的瞳孔缘和睫状沟。应用UBM系统软件中的标尺分3次测量:(1)测量瞳孔区的ICL的长度;对正视眼测量两侧瞳孔缘的直径;(2)测量鼻侧虹膜瞳孔缘到睫状沟的距离;(3)测量颞侧虹膜瞳孔缘到睫状沟的距离。将多次测量的平均结果相加即可得出睫状沟到睫状沟SS的距离。
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