Accuracy of intraocular lens calculation formulas in cataract patients with steep corneal curvature

• DOI: 10.1371/journal.pone.0241630
• Publication Date: 2020-11-20T18:40:32Z
• Authors: Chenguang Zhang; Guangzheng Dai; Emmanuel Eric Pazo; Ling Xu; Xianwei Wu; Hongda Zhang; Tiezhu Lin; Wei He
• Keywords: Aged, 80 and over; Lenses, Intraocular; Male; Analysis of Variance; Biometry; Phacoemulsification; Science; Q; R; Cataract Extraction; Middle Aged; Refraction, Ocular; Cataract; 03 medical and health sciences; 0302 clinical medicine; Lens Implantation, Intraocular; Medicine; Humans; Female; Research Article; Aged; Retrospective Studies

Objective To compare the accuracy of five kinds intraocular lens calculation formulas (SRK/T, Haigis, Hoffer Q, Holladay and Barrett Universal Ⅱ) in cataract patients with steep curvature cornea ≥ 46.0 diopters. Methods This is a retrospective study phacoemulsification combined implantation (corneal 46D). The refractive prediction errors IOL power Holladay, II) using User Group for Laser Interference Biometry (ULIB) constants were evaluated compared. refraction results assessed at one month postoperatively. According to axial length (AL), all divided into three groups: short AL group (<22mm), normal (>22 ≤24.5mm) long (>24.5mm). Calculate error absolute (AE) between actual postoperative predicted power. covariance analysis was used comparison each group. correlation from every formula analyzed by Pearson test, respectively. Result Total 112 eyes 83 collected. anterior chamber depth (ACD) covariate ( P <0.001). SRK/T had lowest mean (MAE) (0.47D), there statistically significant differences MAE = 0.024). no 0.521, 0.609 respectively). In group, difference 0.609). II (0.35), 0.012). Over entire range, highest percentage within ± 0.50 D, 1.00 1.50 D (69.6%, 93.8%, 98.2% Conclusion Compared SRK/T, Ⅱ more accurate predicting