RT Journal Article
T1 Repeatability of Subjective Refraction in Different Age Groups
A1 Carpena Torres, Carlos
A1 Batres Valderas, Laura
A1 Serramito Blanco, María
A1 Carracedo Rodríguez, Juan Gonzalo
AB 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.
PB MDPI
YR 2024
FD 2024-07-02
LK https://hdl.handle.net/20.500.14352/113531
UL https://hdl.handle.net/20.500.14352/113531
LA eng
NO 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
DS Docta Complutense
RD 7 abr 2025