• synonyms


noun Ophthalmology.
  1. a fatigue or tiring of the eyes, usually characterized by discomfort, dimness of vision, and headache, caused by overuse of the visual organs, dysfunction of the ocular muscles, and incorrect refraction.
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Origin of asthenopia

< Greek asthen(ḗs) frail (see asthenia) + -opia
Related formsas·the·nop·ic [as-thuh-nop-ik] /ˌæs θəˈnɒp ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for asthenopia

Historical Examples

  • Asthenopia, which occurs in children in connection with hypermetropia, is nearly always accompanied by defective vision.

    Schweigger on Squint

    C. Schweigger

  • Despite all reasons then for the supposition the asthenopia was certainly not of a muscular nature.

  • The only drawback to her perfect use of all her functions lay in asthenopia, which lasted nearly a year after she left my care.

    Fat and Blood

    S. Weir Mitchell

British Dictionary definitions for asthenopia


  1. a technical name for eyestrain
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Derived Formsasthenopic (ˌæsθɪˈnɒpɪk), adjective

Word Origin

C19: from New Latin, from Greek asthenēs weak (from a- 1 + sthenos strength) + ōps eye
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

asthenopia in Medicine


  1. eyestrain
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Related formsas′the•nopic (-nŏpĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.