KUMAR, Narendra. Ptosis Spectacle. Canadian Journal of Optometry, [S. l.], v. 70, n. 3, 2008. DOI: 10.15353/cjo.70.696. Disponível em: https://openjournals.uwaterloo.ca/index.php/cjo/article/view/696. Acesso em: 19 jun. 2025.