See below: Amaurosis fugax is when the central retinal artery is blocked by a plaque or deposit from the carotids. This results in restriction or stoppage of blood flow to the retina which causes the vision to shut off. It usually manifests like a window shade coming down over the field of vision. The symptom usually lasts just a minute or two and then returns. If this happens, see your doctor asap.
Answered 4/8/2012
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