Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun Weakness or fatigue of the eyes, usually accompanied by headache and dimming of vision.

from The Century Dictionary.

  • noun Weakness of the eyes.

from the GNU version of the Collaborative International Dictionary of English.

  • noun Weakness of sight.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun An ophthalmological condition that manifests itself through nonspecific symptoms such as fatigue, red eyes, eye strain, pain in or around the eyes, blurred vision, headache and occasional double vision.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a tiredness of the eyes caused by prolonged close work by a person with an uncorrected vision problem

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[asthen(ia) + –opia.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

New Latin, "weak vision", ultimately from Greek roots as follows: a-, without + sthenos, strength + -opia, visual condition (from op, eye)

Examples

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