Development and preliminary psychometric evaluation of a spectacle trial-wear questionnaire for distance single-vision prescriptions.

Authors

Meina Huang, Zheyi Chen

Published in

Frontiers in medicine. Volume 13. Pages 1935095. Epub Oct 05, 2026.

Abstract

Existing vision questionnaires were not designed to standardize immediate patient appraisal of a distance single-vision spectacle prescription during trial wear. This study developed and preliminarily evaluated the Adult Spectacle Trial-Wearing Experience Scale (ASTWES) for this decision point.
Candidate items were informed by a structured literature search and interviews with eye-care and dispensing professionals, refined through two Delphi rounds, cognitively debriefed with 10 target patients, and piloted in 150 adults. Item reduction used corrected item-total correlations and principal-axis factoring with promax rotation. The independent formal psychometric evaluation sample comprised 393 adults within the prespecified 18-35-year age range; ordinal confirmatory factor analysis (CFA), robust maximum-likelihood sensitivity analysis, and reliability coefficients were used. An eligible subsample of 98 participants provided a 1-month satisfaction rating for exploratory association analyses.
The final questionnaire contained 9 items in 3 correlated domains: clarity and focus, comfort and stability, and environmental adaptation. Retained pilot-item loadings ranged from 0.694 to 0.890. The correlated three-factor model was supported under both CFA estimators, whereas a single-factor model fit poorly. Subscale Cronbach's alpha values ranged from 0.769 to 0.803. Omega hierarchical was 0.641, favoring subscale-first interpretation. The overall mean item score correlated with 1-month satisfaction (Spearman rho = 0.753, p < 0.001); its exploratory AUC was 0.850 (bootstrap 95% CI 0.772-0.918).
ASTWES is a concise candidate questionnaire with preliminary evidence of a correlated three-domain structure, acceptable internal consistency, and short-term clinical association in Chinese adults aged 18-35 years. Further independent patient-centered content evaluation and external validation are needed before routine use or fixed decision thresholds are considered.

PMID:
42898141
Bibliographic data and abstract were imported from PubMed on 20 Oct 2026.

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