Abstract
A study to determine the prevalence and types of refractive errors among secondary school students in Isuikwuato Local Government Area, Abia State, Nigeria was conducted. Pre-tested questionnaires were administered by two trained interviewers. Penlight examination, Hisirschberg's test, cover test, funduscopy with a direct ophthalmoscope, without and when necessary, with dilatation were performed by one optometrist. The design of this study was a cross sectional survey involving a one-time screening of 22 secondary school students in the LGA aged 11 "and 19 grouped in four yearly intervals for common refractive errors. Vision screening was conducted and those respondents found to have refractive errors were referred for further examination using the Modified Clinical Technique (MCT) criteria for referral. Furthermore, the randomness of refractive error among secondary student was tested with comparison independent sample and T-Test. When all cases of ametropia were considered, a total of 69.6% was found. Myopia predominated (36.2%), followed by hyperopia (18.0%) astigmatism (8.5%) and anisometropia (6.9%). Hence it is onus on us especially those in the medical profession to see that the menace of this refractive problem is checked.
Highlights
A study to determine the prevalence and types of refractive errors among secondary school students in Isuikwuato Local Government Area, Abia State, Nigeria was conducted
Refractive Error reported that the most common refractive errors occurs when parallel rays of light fail to among secondary school students is myopia converge to a sharp focus on the retina resulting in followed by hyperopia and astigmatism
Refractive error problems were classified as hyperopia, myopia, astigmatism and anisometropia
Summary
Blurred vision from refractive error can be corrected (Myopia), long sight (hyperopia), astigmatism and with eye glasses or contact lenses. Refractive Error reported that the most common refractive errors (ametropia) occurs when parallel rays of light fail to among secondary school students is myopia converge to a sharp focus on the retina resulting in followed by hyperopia and astigmatism. One was picked and that one happened to be 4.so from the register as the starting number is 4, the following numbers were picked systematically 14, 24, 34, 44, and the students who had these numbers were included in the sample of 772, they were grouped by school type, age in years 11-19 years old as well as by sex male and female.
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