Hohs, Kathryn, and Christina Morettin. “Acute Horner Syndrome from Supraclavicular Lymphadenopathy As the First Manifestation of Metastatic Lung Carcinoma ”. Canadian Journal of Optometry 87, no. 2 (June 26, 2025): 11–25. Accessed December 18, 2025. https://cjo-rco.ca/index.php/cjo/article/view/6207.