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Multiple Choice

Amaurosis fugax is best described as:

Amaurosis fugax is a transient monocular vision loss caused by retinal ischemia from an embolus in the ipsilateral carotid circulation. Emboli travel from the internal carotid artery into the ophthalmic artery and briefly impair retinal blood flow, producing sudden vision loss in one eye that resolves as perfusion is restored. This presentation is a warning sign of carotid artery disease and elevates stroke risk, so it’s typically described as a transient, unilateral loss of vision due to retinal ischemia from carotid-derived emboli. It is not bilateral, not typically diplopia, and not a permanent blindness, distinguishing it from other visual disturbances. Urgent vascular evaluation is warranted to address carotid pathology and reduce the risk of stroke.

Amaurosis fugax is a transient monocular vision loss caused by retinal ischemia from an embolus in the ipsilateral carotid circulation. Emboli travel from the internal carotid artery into the ophthalmic artery and briefly impair retinal blood flow, producing sudden vision loss in one eye that resolves as perfusion is restored. This presentation is a warning sign of carotid artery disease and elevates stroke risk, so it’s typically described as a transient, unilateral loss of vision due to retinal ischemia from carotid-derived emboli. It is not bilateral, not typically diplopia, and not a permanent blindness, distinguishing it from other visual disturbances. Urgent vascular evaluation is warranted to address carotid pathology and reduce the risk of stroke.