Man with swollen eye

A previously healthy 69-year-old man presented to the emergency department with right orbital pain and blurred vision for 1 day. He denied fever or recent trauma history. On examination, he had subconjunctival haemorrhage, chemosis and proptosis (figure 1). His neurologic examination revealed right-sided ophthalmoplegia. His vital signs were stable, and the rest of the physical examination and laboratory study were unremarkable. Figure 1 Photograph of the patient showing chemosis and proptosis of his right eye. What is the most likely diagnosis for this patient? 1. Orbital cellulitis. 2. Orbital …