Low Visual Acuity Among Children in Public Schools in the Northeast of Brazil: A Cross-Sectional Study. - de Oliveira LN; Costa MGR; Pereira IOS; Tokumoto IC; Moreira JLML; Freitas MCL; Sampaio CS; de Oliveira MN; Bessa Junior J; de Oliveira Neto HL (Cureus, 2025)