
1) Eyestrain 2) Fatigue 3) Tiredness 4) Weariness
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https://www.crosswordclues.com/clue/asthenopia

1) Eyestrain
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https://www.crosswordclues.com/clue/asthenopia

Asthenopia (aesthenopia) from the Greek word `asthen-opia : ασθεν-ωπία` or eye strain is an ophthalmological condition that manifests itself through nonspecific symptoms such as fatigue, pain in or around the eyes, blurred vision, headache and occasional double vision. Symptoms often occur after reading, computer work, or other close ac.....
Found on
http://en.wikipedia.org/wiki/Asthenopia

muscular weakening of the eyes
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http://phrontistery.info/a.html

• (n.) Weakness of sight.
Found on
http://thinkexist.com/dictionary/meaning/asthenopia/

Term generally used to describe complaints related to refractive error, ocular muscle imbalance, including pain or aching around the eyes, burning and itchiness of the eyelids, ocular fatigue, and headaches. ... (12 Dec 1998) ...
Found on
http://www.encyclo.co.uk/local/20973

(as″thә-no´pe-ә) weakness or easy fatigue of the eye, with pain in the eyes, headache, and dimness of vision. adj., asthenop´ic., adj. accommodative asthenopia asthenopia due to strain of the ciliary muscle. muscular asthenopia as...
Found on
http://www.encyclo.co.uk/local/21001
As`the·no'pi·a noun [ Greek
'a priv. +
sqe`nos strength +
'w`ps eye.] Weakness of sight.
Quain. --
As`the*nop'ic adjective Found on
http://www.encyclo.co.uk/webster/A/136

(as-then-OH-pee-uh) Vague eye discomfort arising from use of the eyes; may consist of eyestrain, headache, and/or browache May be related to uncorrected refractive error or poor fusional amplitudes
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http://www.eyeglossary.net/

Type: Term Pronunciation: as′thĕ-nō′pē-ă Definitions: 1. Subjective symptoms of ocular fatigue, discomfort, lacrimation, and headaches arising from use of the eyes. Synonyms: eyestrain
Found on
http://www.medilexicon.com/medicaldictionary.php?t=8048

asthenopia Eye weakness or strain, often causing headache, ocular discomfort, etc.
Found on
http://www.wordinfo.info/words/index/info/view_unit/2041/

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.
Found on
https://www.infoplease.com/dictionary/asthenopia
No exact match found.