Dougnon, Amassagou, et al. “Situation Analysis of Uncorrected Refractive Errors in Sub-Saharan Francophone African Countries”. Journal of Ophthalmology and Research, vol. 5, no. 1, Mar. 2022, pp. 48-65, https://fortunejournals.org/ojs/index.php/jor/article/view/17425.