From EyeWiki
Original article contributed by: Ayesha Shariff, MSIV, Robert F. Melendez, MD, MBA
All contributors: Chrysavgi Adamopoulou, MD, K. David Epley, M.D. and Robert F. Melendez, MD, MBA
Assigned editor: Chrysavgi Adamopoulou
Review: Assigned status Update Pending by K. David Epley, M.D. on October 10, 2014.
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Disease Entity[edit | edit source]


Definition[edit | edit source]

Eyestrain; subjective symptoms of ocular fatigue, discomfort, lacrimation, and headaches arising from the use of eyes. Weakness or tiring of eyes accompanied by pain, headache, and dimness of vision.

Etiology[edit | edit source]

Accommodative asthenopia: strain of ciliary muscle and refractive error. Photogenous asthenopia: excessive or improper illumination. Muscular asthenopia: due to imbalance of the extraocular muscles Nervous asthenopia: due to functional or organize nervous disease

Symptoms[edit | edit source]

Pain in and around eyes; headache, usually aggravated by use of eyes for closework; fatigue; vertigo; reflex symptoms as nausea, twitching of facial muscles, migraine.

References[edit | edit source]

Taber's Cylocpeic Medical Dictionary Stedman's Medical Dictionary