A patient describes a brief episode of visual impairment where it was as if a dark shade was gradually coming down over one eye.The vision returned a moment later.This is most commonly described in which condition?

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The brief episode of visual impairment, as described, is indicative of amaurosis fugax. Amaurosis fugax is a temporary loss of vision in one eye that is often described as a shade coming down over the eye. It is usually caused by a temporary blockage of blood flow to the eye, which can be a warning sign of an impending stroke. Glaucoma, cataracts, and macular degeneration do not typically present with this specific symptom.

A Patient Describes a Brief Episode of Visual Impairment Where