Syafi’in, Syafi’in, and Byba Melda Suhita. “Impaired Vision Function Due to Use of Gadget”. Journal for Quality in Public Health 4, no. 2 (May 7, 2021): 83–86. Accessed September 20, 2025. https://jqph.org/index.php/JQPH/article/view/195.