三种人工晶体计算公式评估高度近视白内障患者术后屈光度的准确性比较

Comparison of Three Formulas for Calculating Intraocular Lens in Evaluating the Accuracy of Dioptre after Cataract Surgery in Patients with High Myopia

目的:研究Barrett UniversalⅡ(下文简称Barrett)、Haigis、SRK/T三种人工晶体(IOL)算法在高度近视白内障患者术后屈光度预估方面的价值。方法:回顾性分析2018年1月-2019年12月本院确诊的高度近视白内障并接受超声乳化IOL植入治疗的90例患者(90眼)的病案资料,依照眼轴不同分为A组(26~28 mm)、B组(28.01~30 mm)、C组(>30 mm);依照角膜曲率不同分为D组(≤43 D)、E组(43.01~45 D)、F组(>45 D);依照前房深度不同分为G组(≤3.2 mm)、H组(3.3~3.5 mm)、I组(>3.5 mm)。分别使用上述三种IOL算法计算不同组的IOL屈光度平均绝对误差(MAE)。结果:90例患者屈光度MAE比较,Barrett算法误差最小,各算法对比,差异均有统计学意义(P<0.05);在±0.5D误差范围内,Barrett算法占比(71.11%)高于Haigis(38.89%)及SRK/T(50.00%),差异均有统计学意义(P<0.05);A、B、C组和D、E、F组及G、H、I组组内各算法的IOL屈光度MAE比较,差异均有统计学意义(P<0.05),总体上Barrett算法误差最小。结论:IOL屈光度计算推荐使用Barrett算法,误差小。

Objective:To study the value of Barrett UniversalⅡ(Barrett),Haigis and SRK/T intraocular lens(IOL)algorithm in predicting postoperative dioptre in patients with high myopia.Method:The clinical data of 90 patients(90 eyes)with high myopia cataract diagnosed in our hospital from January 2018 to December 2019 were retrospectively analyzed.They were divided into group A(26-28 mm),group B(28.01-30 mm)and group C(>30 mm)according to the different eye axis,and group D(≤43 D),group E(43.01-45 D)and group F(>45 D)according to the different corneal curvature.They were divided into group G(≤3.2 mm),group H(3.3-3.5 mm)and group I(>3.5 mm).The mean absolute error(MAE)of IOL diopter in different groups was calculated by the above three algorithms.Result:Compared with the actual spherical equivalent diopter,Barrett algorithm had the smallest error(P<0.05);Within the error range of±0.5 D,Barrett algorithm(71.11%),higher than Haigis(38.89%)and SRK/T(50.00%),the differences were statistically significant(P<0.05);comparison of IOL diopter MAE of group A,B,C,D,E,F and G,H,I showed statistically significant differences(P<0.05),and the error of Barrett algorithm was the smallest in general.Conclusion:Barrett Algorithm is recommended for IOL diopter calculation,and the error is small.