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moon blindness

American  

noun

Veterinary Pathology.
  1. a disease of horses in which the eyes suffer from recurring attacks of inflammation, eventually resulting in opacity and blindness.


moon blindness British  

noun

  1. ophthalmol a nontechnical name for nyctalopia

  2. Also called: mooneyevet science a disorder affecting horses, which causes inflammation of the eyes and sometimes blindness

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • moon-blind adjective

Etymology

Origin of moon blindness

First recorded in 1710–20

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Researchers at the LMU Equine Clinic have developed a deep learning tool that is capable of reliably diagnosing moon blindness in horses based on photos.

From Science Daily

One Eye has been losing sight in his remaining eye because he has equine recurrent uveitis, also known as moon blindness.

From New York Times

At one meal the subject of moon blindness had cropped up, and many curious anecdotes were told anent it—anecdotes more or less truthful, after the manner of shipboard stories.

From Project Gutenberg

We had no cases of feigned insanity or any species of mania, but cases of imitated "moon blindness," or dim-sightedness, did occur now and again for the purpose of shirking night watch.

From Project Gutenberg