白内障手术患者IOL-Master和A超眼内生物学测量比较  

Comparison of IOL-Master and A-scan ultrasound in biometry analysis in patients with cataract surgery

作　　者：缪浴宇[1] 邹海东[1] 刘海芸[1] 孙倩[1] 孙勇[1] 郑高欣[1] 

机构地区：[1]上海交通大学第一人民医院眼科,上海200080

出　　处：《上海交通大学学报（医学版）》2008年第6期704-706,共3页Journal of Shanghai Jiao tong University:Medical Science

基　　金：上海市视觉复明临床医学中心科研基金(FM040102-3-5)~~

摘　　要：目的比较IOL-Master仪与A型超声(A超)在测量白内障手术患者中央前房深度、眼轴长度及人工晶体上的差异。方法选取接受白内障手术的患者120例138眼,术前分别采用IOL-Master仪和A超完成中央前房深度以及眼轴的测量,比较测量结果的差异。将患眼平均分为IOL-Master组和A超组,应用SRK-T公式计算人工晶体度数;超声乳化联合折叠式人工晶体植入术后随访3个月以上,行屈光检查比较两组在人工晶体测量结果上的准确性。结果术前采用IOL-Master与A超测量得到的平均中央前房深度和平均眼轴长度差异无统计学意义(P>0.05);但在高度近视眼中两种测量结果的差异有统计学意义(P<0.05)。随访期末,术眼平均等效球镜度数与预期值差异≤0.50 D和≤1.00 D者,两组差异均无统计学意义(P>0.05);但在高度近视眼中差异有统计学意义(P<0.05)。结论IOL-Master仪与A超测量的术前前房深度和眼轴的结果一致,但在高度近视眼中IOL-Master的准确性较好。Objective To investigate the differences between IOL-Master and A-scan ultrasound in measurement of anterior chamber depth （ACD） and axial length （AL）, and in calculation of intraocular lens diopter in patients with cataract surgery. Methods One hundred and thirty-eight eyes of 120 patients with cataract surgery were included. ACD and AL measurement was done preoperation by IOL-Master and A-scan ultrasound, respectively, and the results were compared. The patients were then randomly divided into IOL-Master group and A-scan ultrasound group, and the intraocular lens diopters were calculated with SRK-T formula. After regular phacoemulsification and foldable ocular lens implantation surgery, the patients were followed up for at least 3 months. The examinations of refraction were conducted, and the accuracy of intraocular lens calculation was analyzed. Results There was no significant difference in the estimated values of mean ACD and AL preoperation between the methods of IOL-Master and A-scan ultrasound （ P 〉 0.05）. But in the eyes with high myopia, there were significant differences in the results obtained by the two methods （P 〈 0.05）. At the end of the follow-up, there was no significant difference between the two groups in the proportion of patients whose refractive error differed from estimation in the range of ≤0.50 D or ≤ 1.00 D （P 〉 0.05）. However, in the eyes with high myopia, the differences were significant（P 〈 0.05）. Conclusion The preoperative values of ACD and AL measured by IOL-Master and A-scan ultrasound are almost the same, but IOL-Master is better in accuracy for the eyes with high myopia.

关 键 词：生物学测量 A型超声 白内障 

分 类 号：R779.66[医药卫生—眼科]