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amaurosis fugax

[fōō′găks′]
n.
  1. A temporary blindness that may result from transient ischemia caused by an insufficiency of the carotid artery or exposure to centrifugal force.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.