Earatt, Amanda Mohanan, Lathika Vasu Kamaladevi, and Charles K. Skariah. 2016. “A 73-Year-Old Man With Congestion and Mild Proptosis of the Left Eye”. Digital Journal of Ophthalmology 22 (2). Boston, Massachusetts, USA:58-61. https://doi.org/10.5693/djo.03.2014.05.001.