Astigmatism: Prevalence, Distribution and Determinants in Owerri, Nigeria. Journal of Experimental and Clinical Anatomy, [S. l.], v. 12, n. 2, p. 87–91, 2013. DOI: 10.4103/1596-2393.127970. Disponível em: https://jecajournal.com/index.php/home/article/view/168.. Acesso em: 1 may. 2025.