amaurosis fugax

[fōōgăks′]
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.