Original research: Refractive error correction among urban and rural school children using two self-adjustable spectacles

[摘要] Objective Self-refracting spectacles (SRSs) have different optical and mechanical designs, which may affect the refractive outcome, depending on the experience of the end user. This study compared the performance of two SRS among children in Ghana.Methods and analysis A cross-sectional study of two Alvarez variable-focus SRS designs was conducted. A total of 167 children (mean age 13.6±1.6 years) identified as having refractive error were recruited from 2465 students who underwent screening. Subjects completed self-refraction using FocusSpecs, and Adlens, autorefraction and cycloplegic subjective refraction (CSR) (gold standard). Wilcoxon signed-rank test was used to compare visual outcomes and accuracy of refraction and graphically illustrated using Bland-Altman plots.Results0.00) but differed significantly when both were compared with the gold standard (CSR) (p<0.05).Conclusion Background and refraction experience of school children did not significantly affect self-refraction.

[学科分类] 工业工程学

[关键词] Child health (paediatrics);Optics and Refraction;Public health