What does exophthalmos indicate?

Exophthalmos specifically refers to the protrusion or bulging of one or both eyeballs from the eye socket. This condition is most commonly associated with hyperthyroidism, particularly Graves' disease, but can also occur due to other medical conditions. When the eyes protrude, it can lead to a variety of issues, including discomfort and changes in vision. Understanding that exophthalmos indicates a physical change in the positioning of the eye is crucial for recognizing its implications on overall health. The other options describe different ocular issues, such as eyelid position or vision changes, but they do not capture the specific physical alteration represented by exophthalmos.