Aier School of Ophthalmology, Central South University, Changsha, 410015, China.
Aier Eye Hospital, Jinan University, Guangzhou, 510071, China.
Graefes Arch Clin Exp Ophthalmol. 2024 Nov;262(11):3619-3628. doi: 10.1007/s00417-024-06506-w. Epub 2024 May 17.
To compare the accuracy of 14 formulas in calculating intraocular lens (IOL) power in extremely long eyes with axial length (AL) over 30.0 mm.
In this retrospective study, 211 eyes (211 patients) with ALs > 30.0 mm were successfully treated with cataract surgery without complications. Ocular biometric parameters were obtained from IOLMaster 700. Fourteen formulas were evaluated using the optimized A constants: Barrett Universal II (BUII), Kane, Emmetropia Verifying Optical (EVO) 2.0, PEARL-DGS, T2, SRK/T, Holladay 1, Holladay 2, Haigis and Wang-Koch AL adjusted formulas (SRK/T, Holladay 1, Holladay 1, Holladay 2, Holladay 2). The mean prediction error (PE) and standard deviation (SD), mean absolute errors (MAE), median absolute errors (MedAE), and the percentage of prediction errors (PEs) within ± 0.25 D, ± 0.50 D, ± 1.00 D were analyzed.
The Kane formula had the smallest MAE (0.43 D) and MedAE (0.34 D). The highest percentage of PE within ± 0.25 D was for EVO 2.0 (37.91%) and the Holladay 1 formulas (37.91%). The Kane formula had the highest percentage of PEs in the range of ± 0.50, ± 0.75, ± 1.00, and ± 2.00 D. There was no significant difference in PEs within ± 0.25, ± 0.50 ± 0.75 and ± 1.00 D between BUII, Kane, EVO 2.0 and Wang-Koch AL adjusted formulas (P > .05) by using Cochran's Q test. The Holladay 2 formula has the lowest percentage of hyperopic outcomes (29.38%).
The BUII, Kane, EVO 2.0 and Wang-Koch AL adjusted formulas have comparable accuracy for IOL power calculation in eyes with ALs > 30.0 mm.
比较 14 种公式在计算眼轴（AL）超过 30.0mm 的极长眼的人工晶状体（IOL）度数的准确性。
本回顾性研究共纳入 211 只（211 例）无并发症的白内障术后超长眼（AL>30.0mm）。眼生物测量参数由 IOLMaster 700 获得。采用优化的 A 常数评估 14 种公式：巴雷特通用 II（BUII）、凯恩、埃默托皮亚验证光学（EVO）2.0、PEARL-DGS、T2、SRK/T、霍拉迪 1、霍拉迪 2、海吉斯和王-科赫 AL 调整公式（SRK/T、霍拉迪 1、霍拉迪 1、霍拉迪 2、霍拉迪 2）。分析平均预测误差（PE）和标准差（SD）、平均绝对误差（MAE）、中位数绝对误差（MedAE）以及预测误差（PE）在±0.25D、±0.50D、±1.00D 范围内的百分比。
凯恩公式的 MAE（0.43D）和 MedAE（0.34D）最小。EVO 2.0（37.91%）和霍拉迪 1 公式的±0.25D 内 PE 百分比最高。凯恩公式在±0.50、±0.75、±1.00 和±2.00D 范围内的 PE 百分比最高。通过 Cochran's Q 检验，BUII、凯恩、EVO 2.0 和王-科赫 AL 调整公式在±0.25、±0.50、±0.75 和±1.00D 范围内的 PE 无显著差异（P>.05）。霍拉迪 2 公式的远视结果百分比最低（29.38%）。
BUII、凯恩、EVO 2.0 和王-科赫 AL 调整公式在计算 AL 超过 30.0mm 的眼的 IOL 度数时具有相当的准确性。
