背景:这项研究评估了角膜屈光力对白内障手术中14种新型人工晶状体(IOL)计算公式的准确性的影响。目的是评估这些公式在不同角膜曲率范围内的表现。从而指导更精确的IOL选择。
方法:在本回顾性病例系列中,研究了336例接受白内障手术的患者的336只眼。根据术前角膜屈光力将该队列分为三组。分析的关键指标包括平均预测误差(PE),PE的标准偏差(SD),平均绝对预测误差(MAE),中位数绝对误差(MedAE),以及PE在±0.25D内的眼睛百分比,0.50D,±0.75D,±1.00D和±2.00D。
结果:在平坦K组(Km<43D)中,VRF-G,Emmetrypia验证光学版本2.0(EVO2.0),凯恩,和HofferQST显示出较低的SDs(±0.373D,±0.379D,±0.380D,±0.418D,分别)与VRF公式相比(所有P<0.05)。与BarrettUniversalII(BUII)相比,EVO2.0和K6显示出显着差异(均P<0.02)。在中等K组中(43D≤Km<46D),VRF-G,BUII,Karmona,K6,EVO2.0,凯恩,和Pearl-DGS记录的MAE(0.307D至0.320D)低于Olsen(OLCR)和Castrop(所有P<0.03),RBF3.0具有第二低的MAE(0.309D),显著低于VRF和Olsen(OLCR)(均P<0.05)。在陡峭的K组中(Km≥46D),RBF3.0、K6和凯恩实现了显著降低的MAE(0.279D,0.290D,0.291D,分别)比Castrop(所有P<0.001)。
结论:该研究强调了基于角膜屈光力的新型IOL公式的不同准确性。VRF-G,EVO2.0凯恩,K6和HofferQST对扁平角膜非常准确,而VRF-G,RBF3.0,BUII,Karmona,K6,EVO2.0,凯恩,和Pearl-DGS被推荐用于中等K角膜。在陡峭的角膜中,RBF3.0、K6和Kane表现出卓越的性能。
BACKGROUND: This study evaluates the impact of corneal power on the accuracy of 14 newer intraocular lens (IOL) calculation formulas in cataract surgery. The aim is to assess how these formulas perform across different corneal curvature ranges, thereby guiding more precise IOL selection.
METHODS: In this retrospective case series, 336 eyes from 336 patients who underwent cataract surgery were studied. The cohort was divided into three groups according to preoperative corneal power. Key metrics analyzed included mean prediction error (PE), standard deviation of PE (SD), mean absolute prediction error (MAE), median absolute error (MedAE), and the percentage of eyes with PE within ± 0.25 D, 0.50 D, ± 0.75 D, ± 1.00 D and ± 2.00 D.
RESULTS: In the flat K group (Km < 43 D), VRF-G, Emmetropia Verifying Optical Version 2.0 (EVO2.0), Kane, and Hoffer QST demonstrated lower SDs (± 0.373D, ± 0.379D, ± 0.380D, ± 0.418D, respectively) compared to the VRF formula (all P < 0.05). EVO2.0 and K6 showed significantly different SDs compared to Barrett Universal II (BUII) (all P < 0.02). In the medium K group (43 D ≤ Km < 46 D), VRF-G, BUII, Karmona, K6, EVO2.0, Kane, and Pearl-DGS recorded lower MAEs (0.307D to 0.320D) than Olsen (OLCR) and Castrop (all P < 0.03), with RBF3.0 having the second lowest MAE (0.309D), significantly lower than VRF and Olsen (OLCR) (all P < 0.05). In the steep K group (Km ≥ 46D), RBF3.0, K6, and Kane achieved significantly lower MAEs (0.279D, 0.290D, 0.291D, respectively) than Castrop (all P < 0.001).
CONCLUSIONS: The study highlights the varying accuracy of newer IOL formulas based on corneal power. VRF-G, EVO2.0, Kane, K6, and Hoffer QST are highly accurate for flat corneas, while VRF-G, RBF3.0, BUII, Karmona, K6, EVO2.0, Kane, and Pearl-DGS are recommended for medium K corneas. In steep corneas, RBF3.0, K6, and Kane show superior performance.