近视 LASIK/PRK 术后后表面角膜曲率和角膜曲率半径比对人工晶状体公式准确性的影响。
Effect of Posterior Keratometry and Corneal Radius Ratio on the Accuracy of Intraocular Lens Formulas After Myopic LASIK/PRK.
出版信息
J Refract Surg. 2024 Sep;40(9):e635-e644. doi: 10.3928/1081597X-20240718-01. Epub 2024 Sep 1.
PURPOSE
To investigate the impact of back-to-front corneal radius ratio (B/F ratio) and posterior keratometry (PK) on the accuracy of intraocular lens power calculation formulas in eyes after myopic laser in situ keratomileusis (LASIK)/photorefractive keratectomy (PRK) surgery.
METHODS
A retrospective, consecutive case series study included 101 patients (132 eyes) with cataract after myopic LASIK/PRK. Mean prediction error (PE), mean absolute PE (MAE), median absolute error (MedAE), and the percentage of eyes within ±0.25, ±0.50, and ±1.00 diopters (D) of PE were determined.
RESULTS
The Barrett True K-TK formula exhibited the lowest MAE (0.59 D) and MedAE (0.48 D) and the highest percentage of eyes within ±0.50 D of PE (54.55%) in total. In eyes with a B/F ratio of 0.70 or less and PK of -5.70 D or greater, the Potvin-Hill formula displayed the lowest MAE (0.46 to 0.67 D).
CONCLUSIONS
The Barrett True-TK exhibited the highest prediction accuracy in eyes after myopic LASIK/PRK overall. However, for eyes with a low B/F ratio and flat PK, the Potvin-Hill performed best. .
目的
探讨在接受近视激光原位角膜磨镶术（LASIK）/准分子激光角膜切削术（PRK）后的患者中，角膜前后面曲率半径比（B/F 比）和后表面角膜曲率（PK）对眼内人工晶状体屈光力计算公式准确性的影响。
方法
本回顾性连续病例系列研究纳入了 101 例（132 只眼）近视 LASIK/PRK 术后白内障患者。测量平均预测误差（PE）、平均绝对 PE（MAE）、中位数绝对误差（MedAE）以及预测误差在±0.25、±0.50 和±1.00 屈光度（D）范围内的眼数百分比。
结果
在所有患者中，Barrett True-K-TK 公式的 MAE（0.59 D）和 MedAE（0.48 D）最低，预测误差在±0.50 D 范围内的眼数百分比最高（54.55%）。在 B/F 比为 0.70 或更低且 PK 为-5.70 D 或更大的眼中，Potvin-Hill 公式的 MAE（0.46 至 0.67 D）最低。
结论
总体而言，Barrett True-TK 在近视 LASIK/PRK 术后患者中具有最高的预测准确性。然而，对于 B/F 比较低且 PK 较平坦的患者，Potvin-Hill 公式表现最佳。
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