SRK／T公式与优化Haigis公式在高度近视眼中的应用比较  

A comparison of the SRK/T and optimized Haigis formulas for cataracts with high myopia

作　　者：魏丽清[1] 陈榆[1] 廉恒丽[1] 聂莉[1] 傅映晖[1] 

机构地区：[1]温州医科大学附属眼视光医院杭州院区,310020

出　　处：《中华眼视光学与视觉科学杂志》2016年第12期747-750,756,共5页Chinese Journal Of Optometry Ophthalmology And Visual Science

摘　　要：目的分析高度近视眼应用SRK／T公式与优化Haigis公式计算人工晶状体（IOL）度数对白内障术后屈光误差的分布情况及影响因素，探讨2种公式的精确度。方法回顾性研究。选取2011年7月至2015年3月来温州医科大学附属眼视光医院行手术治疗，眼轴长度（AL）≥26mm的高度近视白内障患者38例（63眼）。术前用IOLMaster检查AL、角膜屈光力（K）、前房深度（AC），应用SRK／T公式及优化Haigis公式计算IOL度数，术中植入单焦点可折叠IOL，术后3个月或3个月以上进行主觉验光。2种公式术后屈光误差值比较采用配对资料t检验，远视偏移比例比较采用McNemar配对检验，绝对误差值（AE）分布比较采用Wilcoxon秩和检验，对2种公式预留度数的差值及AE与AL、K及AC进行Peason相关分析，对2种公式误差值的影响因素进行多因素线性回归分析。结果SRK／T公式及优化Haigis公式术后平均屈光误差值分别为（-0．52±0．79）D与（-0．67±0．79）D，远视偏移比例分别为78％与86％。2种公式预留度数的差值与AL呈负相关关系（r=-0．27，P〈0．05），与K呈正相关关系（r=0．73，P〈0．01）。2种公式AE与AL呈正相关关系（SRK／T：r=0．43，P〈0．01；优化Haigis：r=0．31，P〈0．05）。AC≤3．5mm时，SRK／T公式与优化Haigis公式屈光误差值直线回归方程分别为P=3．74-0．15AL（R2=0．27，F=3．88，P〈0．05）与Y=12．03-0．19K-0．13AL（R2=0．27，F=3．73，P〈0．05）；AC〉3．5mm时，SRK／T公式与优化Haigis公式屈光误差值直线回归方程分别为y=1．40AC-0．37AL（R2=0．62，F=13．40．P〈0．01）与Y=14．02＋1．76AC-0．25K-0．35AL（R2=0．62。F=13．59，P〈0．01）。结论对于AL较长者，SRK／T远视偏移更明显，优化Haigis公式优于SRK／T公式。对于角膜曲率较大者，优化Haigis公式术后屈光远视偏移误差增大，SRK／T公式优于优化Haigis公式。当AObjective To investigate the factors that influence postoperative refractive error using the SRIQT and optimized Haigis formulas for eyes with high myopia, and to compare the accuracy of the two formulas. Methods This was a retrospective study. Thirty-eight patients （63 eyes） with axial lengths of ≥26 mm underwent cataract surgery from July 2011 to March 2015 in the Eye Hospital of Wenzhou Medical University. Axial length （AL）, corneal curvature （K） and preoperative anterior chamber depth （AC） were measured by IOL-Master preoperatively. The SRK/T and optimized Haigis formulas were used to determine the intraoeular lens （IOL） power and monofocal foldable IOLs were then implanted during surgery. Refractions were measured with a phoropter three months postoperatively. A paired t test was used to analyze the difference in refractive error measurements calculated by the two formulas. The difference in the proportion of hyperopia migration was analyzed by a McNemar test while the difference in the distribution of absolute error （AE） was analyzed by a Wilcoxon signed-rank test. The correlation of the difference in target refractions between the two formulas, as well as AE, AL, corneal curvature and preoperative anterior chamber depth were analyzed by a Pearson correlation analysis. Multiple linear regression was used to investigate the relative factors in refractive error based on the two formulas. Results Refractive errors calculated by the SRK/T and optimized Haigis formulas were -0.52＋0.79 D and -0.67＋0.79 D, respectively, with ratios of a hyperopic migration of 78% and 86%, respectively. The difference in target refraction between the two formulas was negatively correlated with AL （r=-0.27, P〈0.05）, and positively correlated with K （r=0.73, P〈0.01）. Both AEs were positively correlated with axial length （SRK/T： r=0.43, P〈0.01; optimized Haigis： r=0.31, P〈0.05）. Anterior chamber depth was grouped into AC≤3.5 mm and AC〉3.5 mm. In the group with AC≤3.5 mm, line

关 键 词：近视 退行性 屈光 眼 SRK/T公式 优化Haigis公式 

分 类 号：R778.11[医药卫生—眼科]