moon blindness


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moon blindness

n.
Recurrent inflammation of a horse's eyes, often resulting in eventual blindness. Also called mooneye.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
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To prevent "Moon blindness" upon looking away from the eyepiece, use a neutral-density filter, or Moon filter.