Poor Uncorrected Visual Acuity and Association With Sleep Duration and Screen Time: A Dose-Response Relationship...

Area of Science:

• Ophthalmology
• Public Health
• Pediatrics

Background:

• Investigated prevalence of poor uncorrected visual acuity in Northeast China.
• Examined differences across age groups and residential areas.
• Explored links between screen time, sleep duration, and visual acuity.

Purpose of the Study:

• Determine the prevalence of poor uncorrected visual acuity.
• Analyze the impact of age and residential area on visual acuity.
• Assess the relationship between screen time, sleep duration, and visual acuity.

Main Methods:

• Cross-sectional study with multi-stage stratified random sampling.
• Included 2149 students with questionnaires and visual acuity exams.
• Utilized dose-response curves for non-linear association analysis.

Main Results:

• Overall prevalence of poor uncorrected visual acuity was 84.7%.
• Severe poor uncorrected visual acuity prevalence was 63.3%.
• Sleep duration showed a U-shaped association with visual acuity, particularly with screen time ≥1 hour.

Conclusions:

• Nighttime sleep duration is associated with poor uncorrected visual acuity in adolescents.
• The strength of this association varied across different screen time categories.
• Findings highlight the complex interplay between sleep, screen time, and adolescent vision.