144987 20260217205556.0 doi 10.3390/photonics11080711 sideral 139781 ART-2024-139781 eng Gargallo Yebra, Diana Universidad de Zaragoza Analysis of the Effective and Actual Lens Position by Different Formulas. Postoperative Application of a Ray-Tracing-Based Simulated Optical Model 2024 Access copy available to the general public Unrestricted (1) Background: This study compares the effective lens position (ELP) and intraocular lens power (IOLP) derived from SRK/T, Hoffer Q, Holladay I, and Haigis formulas with the actual lens position (ALP) and the implanted IOLP after cataract surgery. Additionally, it aims to optimize ALP using a ray-tracing-based simulated optical model to achieve emmetropia. (2) Methods: A retrospective observational study was conducted on 43 eyes implanted with the same monofocal intraocular lens (IOL). Preoperative and postoperative biometric data were collected using the Lenstar LS900. Postoperative measurements included ALP, subjective refraction, and refraction error (RE). Optical simulations (OSLO EDU 6.6.0) were utilized to optimize ALP for emmetropia (ALPIDEAL). (3) Results: Paired t-test results between REOSLO-REOBJ (p-value = 0.660) and REOSLO-RESUB (p-value = 0.789) indicated no significant statistical differences. However, statistically significant differences were found between ALP and ALPIDEAL (p < 0.05), with a difference of −0.04 ± 0.45 mm [ranging from −1.00 to 1.20 mm]. A significant correlation was observed between ΔALP (ΔALP = ALP − ALPIDEAL) and RESUBJ. (4) Conclusions: This customized ray-tracing eye model effectively achieves refractive outcomes similar to those obtained both subjectively and objectively post-surgery. Additionally, it has enabled optical simulations to optimize the IOL position and achieve emmetropia. info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es 1.9 2024 OPTICS 77 / 125 = 0.616 2024 Q3 T2 0.459 2024 Atomic and Molecular Physics, and Optics 2024 Q2 Instrumentation 2024 Q2 Radiology, Nuclear Medicine and Imaging 2024 Q3 3.5 2024 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Remón Martín, Laura Universidad de Zaragoza (orcid)0000-0002-3979-4528 Pérez Escorza, Iván Castro Alonso, Francisco Javier Universidad de Zaragoza 1013 646 Universidad de Zaragoza Dpto. Cirugía Área Oftalmología 2002 647 Universidad de Zaragoza Dpto. Física Aplicada Área Óptica 11, 8 (2024), 711 [10 pp.] Photonics (Basel) Photonics 2304-6732 1736086 http://zaguan.unizar.es/record/144987/files/texto_completo.pdf Versión publicada 2744982 http://zaguan.unizar.es/record/144987/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:144987 articulos driver 2026-02-17-20:42:25 ARTICLE