Longitudinal changes in ocular biometry and their effect on intraocular lens power calculation accuracy in cataract patients

• DOI: 10.1007/s00417-025-06775-z
• Publication Date: 2025-02-28T11:08:14Z
• Authors: Young In Yun; Richul Oh; Joo Youn Oh; Hyuk Jin Choi; Mee Kum Kim; Chang Ho Yoon
• Keywords: Astigmatism; Mean difference

Abstract Purpose To investigate the changes in ocular biometry over time and their impact on intraocular lens (IOL) calculation adult Korean patients with cataracts. Methods Inclusion criteria were who underwent two consecutive biometric measurements spaced more than one year apart using IOLMaster 700 between November 2019 February 2024 at a tertiary hospital Seoul, Korea. Longitudinal evaluated. Predictive errors compared among cataract surgery SRK/T, Kane, Barrett Universal II, Cook K6, EVO, Hill-RBF, Hoffer QST, Pearl DGS formulas. Results A total of 448 eyes from included. Ocular measured an average interval 23.4 months showed that increasing age, axial length elongated (0.04 ± 0.10 mm, p < 0.001), magnitude corneal astigmatism increased 0.39 D, = 0.018). The mean absolute predictive final significantly smaller to initial formulas (difference -0.05 -0.06 − 0.05 respectively). In subgroup 25 mm or longer, even greater reduction across multiple formulas, including DGS, reductions -0.11 -0.10 -0.08 -0.09 D respectively. Conclusions Axial increases curvature aging. results closer date accurate IOL power those earlier, greatest improvement observed myopic eyes. Therefore, it is recommended repeat before if previous taken ago.