Daisuke Yonezawa, Minoru Yagi
Effect of a School-based Fluoride Mouth-rinsing Programme on Dental Caries
International dental journal
prevention myopia become public health priority china study investigate prevalence myopia vision impairment associated factors school students eastern china crosssectional schoolbased study 4801 students 16 schools ranging kindergarten high school students underwent refraction using noncycloplegic autorefractor visual acuity testing using logmar chart tumbling e myopia defined spherical equivalent sphe 05 diopter uncorrected visual acuity ucva 2025 worse high myopia defined sphe 60 ucva 2025 worse vision impairment defined ucva 2040 worse logistic regression models used determine factors associated myopia vision impairment among 4801 children 55 male mean age standard deviation 123 38 years 3030 631 95 ci 617645 myopia 452 94 95 ci 86103 high myopia 2644 551 95 ci 537565 vision impairment prevalence rate myopia increased grade nonlinear manner 12 kindergarten 32 grade 2 69 grade 5 approximately 90 grade 10 prevalence rate high myopia relatively low grade 4 15 47 grade 5 7 1315 grade 89 20 grade 10 12 prevalence rate vision impairment 4 kindergarten 37 elementary school 77 middle school 87 high school students higher grade p 00001 female p 00001 higher school workload p 0007 independently associated higher prevalence rates myopia vision impairment higher grade p 00001 higher school workload p 00001 independently associated higher prevalence high myopia prevalence myopia vision impairment high among chinese school students increased grade nonlinear manner reaching alarming high high school students accompanied high prevalence high myopia increasing study burden school students younger age plays important role higher prevalence rate myopia vision impairment