Berggren , Lennart, and Ingmar Widengird. “Visual Impairment of Open Angle Glaucomas at First Presentation and After a Five to Ten Year Follow-up”. Upsala Journal of Medical Sciences 97, no. 3 (January 19, 2010). Accessed April 1, 2026. https://ujms.net/index.php/ujms/article/view/7482.