基于光路追迹的Olsen C公式在长眼轴白内障患者人工晶状体屈光力计算中的应用  

The application of Olsen C formula based on optical path tracking in the calculation of intraocular lens refractive power in cataract patients with long eye axis

作　　者：常平骏 徐智子 王倩薇 赵云娥 CHANG Pingjun;XU Zhizi;WANG Qianwei(The Eye Hospital,Wenzhou Medical University,Zhejiang 315300,China)

机构地区：[1]温州医学大学附属眼视光医院,温州325027

出　　处：《浙江创伤外科》2020年第3期403-406,共4页Zhejiang Journal of Traumatic Surgery

基　　金：温州市科技局基金项目(Y20160446)。

摘　　要：目的评估基于光路追迹的Olsen C公式计算长眼轴白内障患者植入人工晶状体(IOL)度数的准确性。方法本文为回顾性临床研究。选取长眼轴白内障患者共62人(62眼),分为两组,A组患者(眼轴26~30mm)共32人(32眼),B组患者(眼轴>30mm)共30人(30眼),术中均植入MI60 IOL。使用传统IOL度数计算公式SRK/T、SRK/T(AL优化)、Haigis、Haigis(AL优化)公式以及Olsen C公式分别计算。以术后平均屈光预测误差(ME),平均绝对术后屈光预测误差(MAE)等比较手术前后差异。结果①使用SRK/T、SRK/T(AL优化)、Haigis、Haigis(AL优化)以及Olsen C公式术后MAE,A组分别为0.62±0.66D、0.51±0.54D、0.59±0.43D、0.49±0.38D及0.37±0.23D(P<0.01);B组分别为0.71±0.78D、0.56±0.68D、0.78±0.73D、0.69±0.58D及0.41±0.52D(P<0.01);②使用SRK/T、SRK/T(AL优化)、Haigis、Haigis(AL优化)以及Olsen C公式术后MAE在0.5D范围内比例,A组为40%、30%、76.7%、30%及76.7%(P<0.01);B组为6.7%、30%、76.7%、30%及76.7%(P<0.01)。结论①在长眼轴患者中,眼轴优化后的SRK/T以及Haigis公式可提高准确性;②相对于传统公式,基于光路追迹的Olsen C公式在长眼轴患者中更有优势,尤其是在眼轴>30mm的患者。Objective To evaluate the accuracy of Olsen C formula based on optical path tracking in calculating the power of IOL implantation in cataract patients with long eye axis.Methods In this retrospective clinical study,a total of 62 eyes of 62 cataract patients with long eye axis were included and divided into 2 axial length groups as follow:26.0 to 28.0 mm(Group A)had 32 patients(32 eyes)and 30.0 mm or more(Group B)had 30 patients(30 eyes).MI60 IOL was implanted during the operation.The traditional IOL power calculation formulas SRK/T,SRK/T(AL optimization),Haigis,Haigis(AL optimization)and Olsen C were used to calculate respectively.The differences before and after operation were compared with the mean postoperative refractive prediction error(ME)and the mean absolute postoperative refractive prediction error(MAE).Results The MAE after operation which using SRK/T,SRK/T(AL optimization),Haigis,Haigis(AL optimization)and Olsen C formula,Group A was 0.62±0.66D,0.51±0.54D,0.59±0.43D,0.49±0.38D and 0.37±0.23D(P<0.01).Group B was 0.71±0.78D,0.56±0.68D,0.78±0.73D,0.69±0.58D and 0.41±0.52D(P<0.01).Using SRK/T,SRK/T(AL optimization),Haigis,Haigis(AL optimization)and Olsen C formula,the proportion of MAE after operation in the range of 0.5D.Group A was 40%,30%,76.7%,30%and 76.7%(P<0.01).Group B was 6.7%,30%,76.7%,30%and 76.7%(P<0.01).Conclusion In patients with long eye axis,the optimized SRK/T and Haigis formula can improve the accuracy.Olsen C formula based on optical path tracing has more advantages than traditional formula in patients with long eye axis,especially in patients with AL>30 mm.

关 键 词：长眼轴 白内障 屈光力 计算公式 准确性 

分 类 号：R779.6[医药卫生—眼科]