A study of Refractive Errors in a Primary School in Cotonou, Benin
Sounouvou I, Tchabi S, Doutetien C, Sonon F, Yehouessi L, Bassabi SK.
Journal Fran√ßais D'Ophtalmologie
The purpose of this study is to determine the epidemiologic aspects and the degree of severity of different refractive errors in primary schoolchildren ranging from 4 to 16 years of age in a public primary school in Cotonou, Benin. The refraction was evaluated for any visual acuity lower than or equal to 0.7.
The study included 1057 schoolchildren average age was 8.5+/-2.6 years with a slight predominance of females (51.8%).
The prevalence of refractive error was 10.6% and astigmatism accounted for the most frequent refractive anomaly (91.9%).
Myopia and the hyperopia were associated with astigmatism in 29.4% and 16.1% of the cases, respectively. The age bracket from 6 to 11 years accounted for the majority of refractive errors (75.9%), without age and sex being risk factors.
The average vision of the ametropic eye was 0.61, with a clear predominance of slight refractive errors (89.3%) and particularly of low-level simple astigmatism (45.5%).
The study concluded that the relatively low prevalence of refractive error observed does not obviate the need for implementing actions to improve the ocular health of schoolchildren.