Cheloni, Riccardo, Alexander G Swystun, Mauro Frisani, and Christopher J Davey. “Referral in a Routine Italian Optometric Examination: Towards an Evidence-Based Model”. Scandinavian Journal of Optometry and Visual Science 14, no. 1 (July 14, 2021): 1–11. Accessed November 30, 2021. https://sjovs.org/index.php/SJOVS/article/view/129.