Abstract：
The purpose of this study was to compare the accuracy of several intraocular (IOL) lens power calculation formulas in long eyes. This was a single-site retrospective consecutive case series that reviewed patients with axial lengths (AL) > 28.0 mm who underwent phacoemulsification. The Wang−Koch (WK) adjustment and Cooke-modified axial length (CMAL) adjustment were applied to Holladay 1 and SRK/T. The median absolute error (MedAE) and the percentage of eyes with prediction errors ±0.25 diopters (D), ±0.50 D, ±0.75 D, and ±1.00 D were used to analyze the formula’s accuracy. This study comprised a total of 35 eyes from 25 patients. The Kane formula had the lowest MedAE of all the formulas, but all were comparable except Holladay 1, which had a significantly lower prediction accuracy with either AL adjustment. The SRK/T formula with the CMAL adjustment had the highest accuracy in predicting the formula outcome within ±0.50 D. The newer formulas (BU-II, EVO, Hill-RBF version 3.0, and Kane) were all equally predictable in long eyes. The SRK/T formula with the CMAL adjustment was comparable to these newer formulas with better outcomes than the WK adjustment. The Holladay 1 with either AL adjustment had the lowest predictive accuracy.
摘要：
目的比较几种眼内（IOL）晶状体屈光力计算公式在长眼中的准确性。这是一个单中心回顾性连续病例系列，回顾了眼轴长度（AL）＆gt;28.0mm接受超声乳化术的患者。Wang-Koch（WK）调整和Cooke修改的轴向长度（CMAL）调整应用于Holladay1和SRK/T。中位数绝对误差（MedAE）和具有预测误差±0.25屈光度（D）的眼睛百分比，±0.50D,±0.75D,和±1.00D用于分析公式的准确性。这项研究共包括25名患者的35只眼。凯恩公式的MedAE在所有公式中最低，但除Holladay1外,所有指标均具有可比性,该指标的预测准确度均显著较低。具有CMAL调整的SRK/T公式在±0.50D内预测公式结果的准确性最高。较新的公式（BU-II，EVO,Hill-RBF3.0版和Kane）在长眼中同样可以预测。具有CMAL调整的SRK/T公式与这些较新的公式相当，结果比WK调整更好。具有任一AL调整的Holladay1具有最低的预测准确性。
