Svarverud, Ellen. “Secondary Glaucoma As a Result of a Sling Shot Accident, Diagnosed Half a Century Later”. Scandinavian Journal of Optometry and Visual Science 5, no. 1 (July 17, 2012): 16–20. Accessed October 21, 2021. https://sjovs.org/index.php/SJOVS/article/view/41.