Purpose: The purpose of this survey was to explore the prevalence of reduced visual acuity and its associated factors among school students in Shenyang in 2016.
Methods: This was a cross-sectional study using data from the Ministry of Education' Student Physical Fitness (MESPF) monitoring in 2016. A total of 13,642 students aged 9-18 years were surveyed in Shenyang. The unaided distance visual acuity was measured, and questionnaire on lifestyle behaviors that may affect visual acuity was investigated among students. The prevalence of reduced visual acuity and its associated factors were analyzed.
Results: The average prevalence of reduced visual acuity among students aged 9-18 years was 65.8%, and severe reduced visual acuity was main (42.9%), and there were statistical effect of age, gender, and region on the prevalence of reduced visual acuity. Binary and multi variable logistic regression results revealed that students sleeping <8 h, homework hours ⩾1 h, and parental myopia had an increased risk of reduced visual acuity.
Conclusions: Sleep time <8 h and homework time ⩾1 h may be associated with reduced visual acuity among students in Shenyang. Therefore, it is benefit for student to get enough sleep and decreasing studying time in order to prevent and reduce poor vision.
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