Sudden loss of vision is an ophthalmological emergency and requires immediate referral to the eye emergency department.
Non-invasive tests for carotid blood flow and lumen diameter should be performed routinely. Angiography should be considered.
Definitive treatment is dependent upon test results. If the condition is a result of an atherosclerotic lesion then an antiplatelet agent such as aspirin or clopidogrel is indicated.
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