Which of the choices indicates a hematoma of the orbit?

Proptosis, or exophthalmos, is a condition characterized by the abnormal protrusion of the eyeball. When a hematoma occurs in the orbit, it can lead to an increase in volume within the confined space of the bony orbit. This increased volume causes the eye to push forward, resulting in proptosis.

Proptosis is particularly indicative of orbital hemorrhage or a hematoma, as the accumulation of blood in the orbital space creates pressure that displaces the eye. Other conditions affecting eye movement or clarity of vision could be significant, but proptosis is a key clinical sign specifically associated with orbital hematomas due to the direct effect of increased orbital pressure.