Asthenopia

Classification according to ICD-10
H53.1	Subjective visual disturbances Asthenopia
ICD-10 online (WHO version 2019)

As asthenopia ( ancient Greek ἀσθενής asthenés , German 'weak, powerless' and ὀπτικός optikós , German 'belonging to vision' ) or asthenopic complaints are a complex of symptoms that - often in younger people - lead to different sensations under visual stress, and the is triggered by motor , accommodative , sensory or optical disturbances of vision .

Symptoms

Symptoms include a. to mention:

Heaviness of the eyelids
quick fatigue and general malaise
a headache
Eye redness , pain and tears, especially when working at close quarters
occasionally double vision
dizziness
Blurred vision

Typically, the symptoms only occur during the day or when there is an increase in visual stress, e.g. B. with intensive screen work .

causes

A general distinction is made between optical / accommodative, muscular, nervous and symptomatic asthenopia. Possible causes are:

incorrectly corrected or incorrectly corrected ametropia of the eye such as farsightedness or myopia
Disorders of eye muscle coordination, e.g. B. with convergence weakness , fixation disparity or latent squint ( heterophoria )
central disturbances of the fusion , d. H. the merging of both individual images of the eyes into one
Fatigue and exhaustion
psychological influences
Neuralgia , conjunctivitis, etc.

Web links

Individual evidence

^ Pschyrembel clinical dictionary. With clinical syndromes and nouns anatomica. = Clinical Dictionary. Edited by the publisher's dictionary editor under the direction of Christoph Zink. 256th, revised edition. de Gruyter, Berlin a. a. 1990, ISBN 3-11-010881-X .
↑ Convergence accuracy of the eyes: New measurement methods for practice and research, Leibniz Institute for Labor Research ( Memento from September 4, 2015 in the Internet Archive )
↑ Herbert Kaufmann (Ed.): Strabismus. 3rd, fundamentally revised and expanded edition. Georg Thieme, Stuttgart a. a. 2004, ISBN 3-13-129723-9 .

[1] Pschyrembel clinical dictionary. With clinical syndromes and nouns anatomica. = Clinical Dictionary. Edited by the publisher's dictionary editor under the direction of Christoph Zink. 256th, revised edition. de Gruyter, Berlin a. a. 1990, ISBN 3-11-010881-X .

[2] Convergence accuracy of the eyes: New measurement methods for practice and research, Leibniz Institute for Labor Research ( Memento from September 4, 2015 in the Internet Archive )

[3] Herbert Kaufmann (Ed.): Strabismus. 3rd, fundamentally revised and expanded edition. Georg Thieme, Stuttgart a. a. 2004, ISBN 3-13-129723-9 .