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[as-thuh-noh-pee-uh] /ˌæs θəˈnoʊ pi ə/
noun, Ophthalmology
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.
Origin of asthenopia
< Greek asthen(ḗs) frail (see asthenia) + -opia
Related forms
[as-thuh-nop-ik] /ˌæs θəˈnɒp ɪk/ (Show IPA),
adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for asthenopia
Historical Examples
  • Despite all reasons then for the supposition the asthenopia was certainly not of a muscular nature.

    Schweigger on Squint C. Schweigger
  • 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
  • asthenopia, which occurs in children in connection with hypermetropia, is nearly always accompanied by defective vision.

    Schweigger on Squint C. Schweigger
British Dictionary definitions for asthenopia


a technical name for eyestrain
Derived Forms
asthenopic (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
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asthenopia in Medicine

asthenopia as·the·no·pi·a (ās'thə-nō'pē-ə)
See eyestrain.

as'the·nop'ic (-nŏp'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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