2026-06-08T07:24:36Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/1135312025-03-18T12:46:54Zcom_20.500.14352_14col_20.500.14352_15

Repeatability of Subjective Refraction in Different Age Groups Carpena Torres, Carlos Batres Valderas, Laura Serramito Blanco, María Carracedo Rodríguez, Juan Gonzalo 535.31 Repeatability Subjective refraction Age Myopia Hyperopia Astigmatism Óptica y optometría 2209 Óptica Background: The purpose of this study was to assess the inter-examiner repeatability of subjective refraction across diverse age cohorts, an aspect not previously investigated. Methods: A cross-sectional, randomized study enrolled 86 participants (mean age: 37.0 ± 18.0 years), distributed into three groups: youth, non-presbyopic adults, and presbyopic adults. Each participant underwent three subjective refractions by three different optometrists on separate days. Repeatability analysis encompassed all refractive variables (M, J0, and J45). Results: There were no significant differences between optometrists in all refractive variables for either the overall sample or across age groups (p ≥ 0.05). Additionally, no correlation was found between participants’ age and the mean difference in refractive variables across optometrists (p ≥ 0.05). The 95% confidence interval of repeatability (r) for the total sample was ±0.70 D for M, ±0.29 for J0, and ±0.21 D for J45. Conclusions: Based on these findings and previous research, it is suggested to establish 95% limits of agreement of ±0.75 D for M, and between ±0.25 D and ±0.50 D for both J0 and J45 when validating new refraction systems compared to subjective refraction as the gold standard, regardless of the age of the subjects evaluated. Depto. de Optometría y Visión Fac. de Óptica y Optometría TRUE pub 2025-01-09T13:32:40Z 2025-01-09T13:32:40Z 2024-07-02 journal article VoR https://hdl.handle.net/20.500.14352/113531 XXXX-XXXX 10.3390/photonics11070634 eng Carpena-Torres, C.; Batres, L.; Serramito, M.; Carracedo, G. Repeatability of Subjective Refraction in Different Age Groups. Photonics 2024, 11, 634. https://doi.org/10.3390/photonics11070634 Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ open access application/pdf MDPI