What is it?

Transient visual loss, also known as amaurosis fugax, is a condition in which the person cannot see in one or both eyes due to a momentary lack of blood flow to the retinal artery. It typically lasts between a few seconds to several minutes. The most common cause for amaurosis fugax is a transient ischemic attack (TIA), which is a stroke precursor. Other causes may include a brain tumor, head injury, multiple sclerosis, lupus, migraine, optic neuritis or polyarteritis nodosa.

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Signs & symptoms

The main symptoms is a feeling is of a sudden clouding over of the vision.


Diagnosis is based upon findings from medical history and physical examination. Further evaluation may include imagine tests of the blood vessels, blood tests for cholesterol levels, electrocardiogram in order to identify heartbeats irregularities.


Treatment involves diagnosing the underlying cause which caused the transient visual loss and treating it. Treatment may include blood thinners, carotid endarterectomy, hypertension medications, and lifestyle changes.

☝️ This is not a substitute for professional medical advice. Please consult with your physician before making any medical decision.

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