What is proptosis?

Proptosis refers specifically to the forward displacement or bulging of the eyeball from the orbit, making it appear protruded. This condition can occur as a result of various medical issues, including thyroid eye disease, trauma, tumors, or inflammation. It is important for clinicians to recognize proptosis during a physical examination, as it can be indicative of underlying health conditions that require further investigation and management.

The other options refer to different ocular conditions. Swelling of the eyelid pertains to edema or inflammation around the eye, blurred vision involves difficulties in seeing clearly, and a painful red eye typically describes conjunctivitis or other inflammatory processes affecting the eye. While all these symptoms can manifest in various ocular pathologies, proptosis specifically describes the physical protrusion of the eyeball itself, distinguishing it from these other conditions.