Which term describes the rostral displacement of the globe in an eye?

The term that describes the rostral displacement of the globe in an eye is exophthalmos. This condition refers to the protrusion or abnormal forward displacement of the eyeball, which can occur due to various factors such as increased volume in the orbit from inflammation, tumors, or increased vascularity.

Enophthalmos, on the other hand, refers to the retraction or sinking of the eye into the orbit, which is the opposite of exophthalmos. Nystagmus is a condition involving involuntary eye movement, often characterized by a rapid oscillation of the eyes, and is not related to the position of the eyeball within the orbit. Miosis pertains to the constriction of the pupil, which is also unrelated to the displacement of the eye itself. Thus, exophthalmos is the accurate term for the condition described.