AlHarkan, Dora. “Knowledge, Attitude, and Practice of Parents of 3- to 5-Year-Olds Regarding Preschool Vision and Eye Screening of Kindergarten Children in Al-Qassim Province, Saudi Arabia—a Survey”. Digital Journal of Ophthalmology 31, no. 1 (March 15, 2025). Accessed June 3, 2026. https://djo.harvard.edu/index.php/djo/article/view/918.