title: Uncorrected refractive error and associated factors among primary school children in Debre Markos District, Northwest Ethiopia.
abstract: BACKGROUND
  Uncorrected Refractive Error is one of the leading cause amblyopia that exposes children to poor school performance. It refrain them from productive working lives resulting in severe economic and social loses in their latter adulthood lives. The objective of the study was to assess the prevalence of uncorrected refractive error and its associated factors among school children in Debre Markos District.
  
  
  METHODS
  A cross section study design was employed. Four hundred thirty two students were randomly selected using a multistage stratified sampling technique. The data were collected by trained ophthalmic nurses through interview, structured questionnaires and physical examinations. Snellens visual acuity measurement chart was used to identify the visual acuity of students. Students with visual acuity less than 6/12 had undergone further examination using auto refractor and cross-checked using spherical and cylindrical lenses. The data were entered into epi data statistical software version 3.1 and analyzed by SPSS version 20. The statistical significance was set at α ≤ 0.05. Descriptive, bivariate and multivariate analyses were done using odds ratios with 95% confidence interval.
  
  
  RESULTS
  Out of 432 students selected for the study, 420 (97.2%) were in the age group 7-15 years. The mean age was 12 ± 2.1SD. Overall prevalence of refractive error was 43 (10.2%). Myopia was found among the most dominant 5.47% followed by astigmatism 1.9% and hyperopia 1.4% in both sexes. Female sex (AOR: 3.96, 95% CI: 1.55-10.09), higher grade level (AOR: 4.82, 95% CI: 1.98-11.47) and using computers regularly (AOR: 4.53, 95% CI: 1.58-12.96) were significantly associated with refractive error.
  
  
  CONCLUSIONS
  The burden of uncorrected refractive errors is high among primary schools children. Myopia was common in both sexes. The potential risk factors were sex, regular use of computers and higher grade level of students. Hence, school health programs should work on health information dissemination and eye health care services provision.
authors: Sintayehu Aweke
authors: SA
authors: Sewunet
authors: Department of Public Health, Debre Markos University, College of Medicine and Health Sciences, PO Box: 269, Debre Markos, Ethiopia. kasyon33@Gmail.com.
authors: Kassahun Ketema
authors: KK
authors: Aredo
authors: Molla
authors: M
authors: Gedefew
mesh_terms: D000293:Adolescent; D017677:Age Distribution; D002648:Child; D003430:Cross-Sectional Studies; D005002:Ethiopia / Q000453:epidemiology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015994:Incidence; D008297:Male; D015995:Prevalence; D012030:Refractive Errors / Q000453:epidemiology*; D012189:Retrospective Studies; D018570:Risk Assessment; D012307:Risk Factors; D012424:Rural Population; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D014792:Visual Acuity