Emily F Galper, Laura Widman, Julia Brasileiro, Seth M Noar
Adolescents' pornography viewing frequency and its relationship with condom attitudes
Sexual health
aim establish prevalence refractive errors preschool school children 4 15 years age living tuzla bosnia herzegovina methods children elementary schools city tuzla well eight daycare centres screened refractive errors period 20152019 child failed pass screening examination referred ophthalmologist complete ophthalmological evaluation obtained data analysed using nonparametric statistics results highest number children tested screening process 2015 total 7415 children 3790 males 3625 females age range 415 screened total sample children completely evaluated n145 290 eyes common refractive error astigmatism 152 524 eyes preschool children n18 36 eyes common refractive error astigmatism 19 528 eyes followed hyperopia 9 25 eyes school children n127 254 eyes common refractive error astigmatism 133 524 eyes followed myopia 92 362 eyes overall prevalence refractive errors 195 145 refractive error 7415 screened conclusion prevalence refractive errors high enough justify school eye screening programme