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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Copyright
© O. E Emurotu, P. E Ohwin, O.O Ofulue, S.O Ajoberhi, 2026
Affiliations
O. E Emurotu
Department of Optometry, Faculty of Allied Medical Sciences, Dennis Osadebey University, Asaba. Nigeria.
P. E Ohwin
Human Physiology Department, Faculty of Basic Medical Science, Delta State University Abraka. Nigeria.
O.O Ofulue
Department of Nursing Science, Faculty of Allied Medical Sciences, Dennis Osadebey University, Asaba. Nigeria.
S.O Ajoberhi
Department of Anatomy and Cell Biology, Faculty of Basic Medical Science, Delta State University Abraka. Nigeria.
How to Cite
Prevalence and Risk Factors of Refractive Errors among Secondary School Students in Asaba Metropolis, Delta State, Nigeria.
Vol 11 No 2 (2025): International Journal of Forensic Medical Investigation
Submitted: Apr 14, 2026
Published: Apr 14, 2026
Abstract
Refractive error occurs when light rays are not properly focused on the retina. The purpose of the research was to evaluate eye refraction as an approach to vision improvement among Asaba metropolitan secondary school pupils, Delta state, Nigeria. A total of 259 participants who ranged in age from 10 to 17yearswere co opted, and these were made up of 141 female and 118 male students. Distant acuity was determined using Snellen chart at 6m; Pinhole assessment was observed for uncorrected 6/12 or worse visual acuity and Subjective refraction assessment for improved visual acuity using the pinhole. Study analyzed data using Statistical Package for Social Sciences version 22.0, descriptive statistics, and Chi-square analysis at p=0.05. Refractive error was statistically prevalent in the study population at 123 (47.5%) with myopia being most prevalent at 22.78% (59). Male accounted for 47 (18.1%) with myopia accounting for 21 cases, hypermetropia was observed in 14 cases (5.4%), and astigmatism were 12 cases (4.6%). However, female accounted for 76 (29.3%) with myopia being 38 cases (14.67%), astigmatism reported as 22 cases (8.49%), and hypermetropia 16 cases (6.18%). The study observed that there is a statistically significant link between age, sex, and the distribution of refractive defect in the study population. Conclusively, the study advocates that school entrance policies in developing nations should include vision screenings and include eye examinations annually for all students as early detection and treatment of refractive errors will improve vision.