A patient presents with transient vision loss. What is the most likely associated finding on examination?

Transient vision loss, often described as temporary visual disturbances, can be associated with several underlying conditions, particularly those related to changes in blood flow to the retina or optic nerve. The presence of a relative afferent pupillary defect on examination is significant because it indicates a defect in the sensory pathway of the affected eye compared to the unaffected eye.

In cases of transient vision loss, such as amaurosis fugax, which is attributed to temporary ischemia or reduced blood flow, the affected eye may demonstrate a relative afferent pupillary defect. This defect occurs when the eye does not respond as well to light compared to the other eye, suggesting that there may be an issue with the optic nerve or the retina itself in the affected eye.

The other findings, while they could apply to different ocular conditions, are less specifically associated with transient vision loss. A normal visual field might be expected in cases where the issue is temporary and does not result in permanent damage. Elevated intraocular pressure is typically associated with conditions like glaucoma rather than transient vision changes. Cranial nerve palsies often present with more persistent symptoms and characteristic deficits that do not specifically align with transient vision loss scenarios. Thus, identifying a relative afferent pupillary defect provides valuable insight into