Hu Y, Xu Q, Shi J, Lin X, Fei J, Hu Y, Mei S, Wu X. Poor Uncorrected Visual Acuity and Association With Sleep Duration and Screen Time: A Dose-Response Relationship Study.
Dose Response 2021;
19:15593258211042161. [PMID:
34658684 PMCID:
PMC8511927 DOI:
10.1177/15593258211042161]
[Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 08/05/2021] [Indexed: 11/25/2022] Open
Abstract
Background
We aimed to investigate the prevalence of poor uncorrected visual acuity and
the difference among students with different ages and residential areas in
the Northeast of China. The relationships between screen time, nighttime
sleep duration, and poor uncorrected visual acuity would be explored.
Methods
It was a cross-sectional study using multi-stage stratified random sampling
method to recruit participants. 2149 students have completed questionnaires
and underwent visual acuity examinations. The dose–response curve method was
applied to examine the non-linear associations between sleep duration and
poor uncorrected visual acuity under different screen time subgroups.
Results
The overall prevalence of poor uncorrected visual acuity and severe poor
uncorrected visual acuity was 84.7% and 63.3%, respectively. The
dose–response curve showed the odds ratios (ORs) of sleep duration for the
poor uncorrected visual increased relatively slowly when screen time
<1 hour, then increased dramatically in screen time ≥1 hours. The ORs of
sleep time and poor uncorrected visual acuity showed a U-shaped change trend
among students with 2 or more hours of screen time every day.
Conclusion
We found associations between nighttime sleep duration and poor uncorrected
visual acuity in adolescents. However, these associations were not
consistent across all screen time categories.
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