From EyeWiki

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.

Additional Resources[edit | edit source]

References[edit | edit source]

  1. Taber's Cylocpeic Medical Dictionary
  2. Stedman's Medical Dictionary