Prevalence of Lateral Strabismus in School Children  Aged between 5-15 years in Asaba Metropolis, Delta  State, Nigeria.

OE Emurotu; SO Ajoberhi

1) Abah, E. R., Oladigbolu, K. K., Gani-Ikilama, E., & Samaila, E. (2011). Congenital and developmental cataract surgery in children: outcome of 108 cases in Kaduna, Nigeria. Journal of Ophthalmology of Eastern Central and Southern Africa, 15(2), 25–31.
2) Akpe, B. A., Dawodu, O. A., & Abadom, D. C. (2014). Prevalence and pattern of strabismus in primary school pupils in Benin City, Nigeria. Nigerian Journal of Ophthalmology, 22(1), 38–43.
3) Awoyesuku, E. A., Ejimadu, C. S., & Adio, A. O. (2016). Pattern of presentation and outcome of management of childhood strabismus in Port Harcourt, Nigeria. Port Harcourt Medical Journal, 10(1), 22–28. https://doi.org/10.4103/07953038.180128
4) Azam, M., Khalil, M., Iqbal, R., & Khan, M. (2019). Prevalence and pattern of strabismus among school children in Pakistan. Pakistan Journal of Medical Sciences, 35(1), 74–78. https://doi.org/10.12669/pjms.35.1.35
5) Bodunde, O. T., Ajaiyeoba, A. I., &Omokhodion, F. O. (2016). Strabismus among school children in Southwest Nigeria: A population-based study. Nigerian Journal of Ophthalmology, 24(1), 24–29. https://doi.org/10.4103/0189-9171.180099
6) Bruce, A., & Santorelli, G. (2016). Prevalence and risk factors of strabismus in a Ophthalmology, 100(11), 1591–1596. https://doi.org/10.1136/bjophthalmol-2015-308266
7) Campomames, J., McKean-Cowdin, R., Cotter, S. A., & Lin, J. (2010). Prevalence and causes of strabismus in children. Ophthalmic Epidemiology, 17(4), 253–262. https://doi.org/10.3109/0928 6586.2010.489505
8) Chia, A., Dirani, M., Chan, Y. H., Gazzard, G., Au Eong, K. G., & Saw, S. M. (2010). Prevalence of amblyopia and strabismus in young Singaporean Chinese children. Investigative Ophthalmology & Visual Science, 51(7), 3411–3417. https://doi.org/10.1167/iovs.09-4461
9) Cotter, S. A., Tarczy-Hornoch, K., Song, E., Lin, J., Torres, M., Varma, R., & the Multi-Ethnic Pediatric Eye Disease Study Group. (2011). Risk factors associated with childhood strabismus: The MultiEthnic Pediatric Eye Disease and Baltimore Pediatric Eye Disease Studies. Ophthalmology, 118(11), 2251–2261. https://doi.org/10.1016/j.ophtha.2011.04.034
10) Dean, W. H. (2019). Paediatric ophthalmology in low-resource settings: prevalence and management of childhood eye diseases. Community Eye Health Journal, 32(106), 22–25.
11) Durnian, J. M., Noonan, C. P., Marsh, I. B., & Woodhouse, J. M. (2011). The psychosocial effects of strabismus: Effect of age of onset. British Journal of Ophthalmology, 95(9), 1275–1279.
https://doi.org/10.1136/bjo.2010.187922
12) Fazal, N. (2012). Essentials of ophthalmology (2nd ed.). Jaypee Brothers Medical Publishers.
13) Govindan, M., Mohney, B. G., Diehl, N. N., & Burke, J. P. (2005). Incidence and types of childhood exotropia: A population-based study. Ophthalmology, 112(1), 104–108. https://doi.org/10.1016/j.ophtha.2004.07.033
14) Gursoy, H., Basmak, H., Yaz, Y. E., & Colak, E. (2012). The psychosocial and functional impact of strabismus before and after surgery in adults. Turkish Journal of Ophthalmology, 42(6), 367–371. https://doi.org/10.4274/tjo.42.367
15) Holmes, J. M., Beck, R. W., Repka, M. X., Leske, D. A., Kraker, R. T., Blair, B., & Moke, P. S. (2014). The amblyopia treatment study visual acuity testing protocol. Archives of Ophthalmology, 118(9), 1220 1223. https://doi.org/10.1001 /archopht.118.9.1220
16) Holmes, J. M., & Clarke, M. P. (2006). Amblyopia. The Lancet, 367(9519), 1343–1351. https://doi.org/ 10.1016/S0140-6736(06)68581-4
17) Kushner, B. J. (2010). Strabismus and amblyopia: Principles and management. Ophthalmology Clinics of North America, 23(4), 601–613. https://doi.org/10.1016/j.ohc.2010.07.004
18) Matsuo, T., & Matsuo, C. (2005). Comparison of prevalence rates of strabismus and amblyopia in Japanese elementary school children between 1983 and 2005. Acta Medica Okayama, 59(3), 79–84.
19) Muma, M. K., Nkumbe, H. E., & Assumpta, M. (2017). Determinants of delayed presentation of childhood strabismus in Sub-Saharan Africa. African Vision and Eye Health, 76(1), 1–6.
https://doi.org/10.4102/aveh.v76i1.393
20) Mwanza, J. C. (2012). The causes and pattern of childhood strabismus in sub-Saharan Africa. African Health Sciences, 12(3), 271–276. https://doi.org/10. 4314/ahs.v12i3.3
21) Noche, C. D., Nkongho, F. T., Nkumbe, H. E., & Epee, E. (2011). Prevalence and risk factors of strabismus in school children in Douala, Cameroon. Clinical Ophthalmology, 5, 939–943.
https://doi.org/10.2147/OPTH.S20274
22) Nwachukwu, H. N., Ezepue, U. F., & Umeh, R. E. (2019). Pattern of ocular morbidities among primary school children in southeastern Nigeria. Nigerian Journal of Ophthalmology, 27(2), 54–59. https://doi.org/10.4103/njo.njo_7_19
23) Pai, A. S.-I., & Mitchell, P. (2010). Prevalence and risk factors for strabismus in an Australian population. Ophthalmology, 117(6), 1096–1101. https://doi.org/10.1016/j.ophtha.2009.10.022
24) Pathai, S., Cumberland, P. M., & Rahi, J. S. (2010). Prevalence of and early-life influences on childhood strabismus: Findings from the Millennium Cohort Study. British Journal of Ophthalmology, 94(8), 1101–1106. https://doi.org/10.1136/ bjo.2009.17013 4
25) Polling, J. R., Loudon, S. E., &Simonsz, H. J. (2012). Prevalence and management of intermittent exotropia: A European perspective. British Journal of Ophthalmology, 96(6), 761–764.
https://doi.org/10.1136/bjophthalmol-2011-301020
26) Sharima, R. (2015). History of the theories of ocular motility and strabismus. Indian Journal of Ophthalmology, 63(7), 563–568. https://doi.org/10. 4103/0301-4738.166555
27) Sihota, R., Tandon, R., & Kaur, R. (2011). Strabismus: Etiology, pathophysiology, and management. Indian Journal of Ophthalmology, 59(6), 481–490. https://doi.org/10.4103/0301-4738.
86316
28) Taha, A. A., & Ibrahim, S. M. (2015). Prevalence and risk factors of strabismus in children attending the Sydney Myopia Study. Middle East African Journal of Ophthalmology, 22(3), 292–298. https://doi.org/10.4103/0974-9233.159759
29) Tenkir, A., Solomon, A. W., & Mulugeta, A. (2010). Prevalence of strabismus among school children in rural Ethiopia. Ethiopian Journal of Health Sciences, 20(2), 109–114. https://doi.org/10.4314/ejhs.v20i2.69429
30) Xu, L., Wang, Y., Wang, S., Wang, Y., & Jonas, J. B. (2012). Prevalence of strabismus in children and adolescents in rural and urban China. Investigative Ophthalmology & Visual Science, 53(2), 631–636. https://doi.org/10.1167/iovs.11-8315
31) Zhu, H., Yu, J. J., Yu, R. B., Ding, H., Bai, J., Chen, J., & Yan, J. (2015). Association between refractive error and childhood strabismus: Results from a large population-based study in China. Scientific Reports, 5, 10077. https://doi.org/10.1038/srep10077

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Affiliations

OE Emurotu
Optometry Department, Faculty of Allied Medical Sciences, Dennis Osadebay University, Asaba, Delta State

SO Ajoberhi
Anatomy and Cell Biology Department, Faculty of Basic Medical Sciences, College of Health Sciences, Delta State University, Abraka, Delta State

How to Cite

Emurotu, O., & Ajoberhi, S. (2026). Prevalence of Lateral Strabismus in School Children Aged between 5-15 years in Asaba Metropolis, Delta State, Nigeria. International Journal of Forensic Medical Investigation, 11(2). Retrieved from https://www.ijfmi.org/index.php/JSD/article/view/229

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Prevalence of Lateral Strabismus in School Children Aged between 5-15 years in Asaba Metropolis, Delta State, Nigeria.

OE Emurotu ,
SO Ajoberhi

Vol 11 No 2 (2025): International Journal of Forensic Medical Investigation

Submitted: Apr 14, 2026

Published: Apr 14, 2026

Abstract

Strabismus is a state of abnormal alignment of the two eyes which could result in the image of the fixating eye falling on the fovea while the image of the non-fixating eye is focused on an extra-foveal region. The aim of this research isto determine the prevalence of lateral strabismus in school children aged between 5-15years in Asaba metropolis, Delta State, Nigeria. A total of 258 subjects aged between 5-15years (mean age= 10.1±2.3years) were recruited for this study. This comprised of 129 (50%) males and 129 (50%) females (ratio 1:1). The magnitude of tropia (exo – eso) per subject was determined using prism bars and loose prisms. The results showed that of the total 129 male subjects, 4 (1.6%) had esotropia while 1(0.4%) had exotropia. For the female population, of the total 129 females, 5(1.9%) had esotropia while 3 (1.2%) had exotropia. Data obtained from this study were analyzed using descriptive statistics (tables,and pie charts), Chi-square analysis and Statistical Package for Social Sciences (SPSS), version 22.0. The prevalence of strabismus was13(5%) in the study population. Strabismus was also found to be significantly more common with the female gender 8(3.1%) than the male 5 (1.9%). Esotropia was found to be the most dominant type of strabismus 9(3.5%) in the study population. This study strongly recommends that School authorities in developing countries should adopt eye examination as entry level and as well, encourage yearly vision screening for their students and pupils to detect the presence of refractive errors, strabismus and other conditions that can cause strabismus.