From the Department of Ophthalmology, Keck School of Medicine of USC, Los Angeles, California (H.J. Shammas); Shammas Eye Medical Center, Lynwood, California (H.J. Shammas, M.C. Shammas, Jivrajka); Eye Clinic, S. Orsola-Malpighi University Hospital, University of Bologna, Bologna, Italy (Taroni, Pellegrini); Ophthalmology Unit, Santa Maria delle Croci Hospital, Ravena, Italy (Taroni).
J Cataract Refract Surg. 2022 Oct 1;48(10):1113-1120. doi: 10.1097/j.jcrs.0000000000000958. Epub 2022 Apr 27.
To analyze the accuracy of newer intraocular lens power formulas in long and short eyes measured using the sum-of-segments biometry.
Private practice, Lynwood, California.
Retrospective observational study.
595 patients scheduled for cataract surgery had their eyes measured using the sum-of-segments biometry. The expected residual refractions were calculated using Barrett Universal II (B II), Barrett True Axial Length (BTAL), Emmetropia Verifying Optical (EVO), Hill-RBF, Hoffer QST, Holladay 2, Holladay 2-NLR, K6, Kane, Olsen, PEARL-DGS, T2, and VRF formulas and compared with the traditional Haigis, Hoffer Q, Holladay 1, and SRK/T formulas.
In the 102 long eyes, all new formulas had a mean absolute error (MAE) equal or lower than the traditional formulas, ranging from 0.29 to 0.32 diopter (D). In the 78 short eyes, BTAL, EVO, Hoffer QST, K6, Olsen, and PEARL-DGS formulas had the lowest MAE (0.33 D, 0.33 D, 0.31 D, 0.36 D, 0.32 D, and 0.32 D, respectively), whereas all traditional formulas exceeded 0.36 D.
All new formulas performed equal or better than the traditional formulas with the sum-of-segments biometry. The best overall results in the short and long eyes as well as in the very short and very long eyes were noted with the BTAL, EVO, Hoffer QST, K6, Olsen, and PEARL-DGS formulas, closely followed by the B II and Kane formulas.
分析使用分段生物测量法测量长眼和短眼时，较新的人工晶状体屈光力公式的准确性。
加利福尼亚州林伍德的私人诊所。
回顾性观察研究。
对 595 名计划接受白内障手术的患者的眼睛进行了分段生物测量。使用 Barrett Universal II（B II）、Barrett 真轴向长度（BTAL）、Emmetropia Verifying Optical（EVO）、Hill-RBF、Hoffer QST、Holladay 2、Holladay 2-NLR、K6、Kane、Olsen、PEARL-DGS、T2 和 VRF 公式计算预期的剩余屈光度，并与传统的 Haigis、Hoffer Q、Holladay 1 和 SRK/T 公式进行比较。
在 102 只长眼中，所有新公式的平均绝对误差（MAE）均等于或低于传统公式，范围在 0.29 至 0.32 屈光度（D）之间。在 78 只短眼中，BTAL、EVO、Hoffer QST、K6、Olsen 和 PEARL-DGS 公式的 MAE 最低（分别为 0.33 D、0.33 D、0.31 D、0.36 D、0.32 D 和 0.32 D），而所有传统公式均超过 0.36 D。
所有新公式与分段生物测量法相结合，表现出与传统公式相同或更好的性能。在短眼、长眼以及极短眼和极长眼中，BTAL、EVO、Hoffer QST、K6、Olsen 和 PEARL-DGS 公式的总体效果最佳，其次是 B II 和 Kane 公式。
