asthenopia


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Related to asthenopia: asthenophobia

asthenopia

[as·thə′nōp·ē·ə]
(medicine)
Weakness of the eye muscles or of visual acuity, sometimes accompanied by pain and headache.
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References in periodicals archive ?
In a previous clinical trial assessing the effect on asthenopia (Kajita et al.
Results of well-controlled trials in human volunteers suggest that the carotenoid antioxidant astaxanthin can help prevent eyestrain, known technically as asthenopia.
Convergence insufficiency (CI) is associated with a number of symptoms, including headaches, eye fatigue, and asthenopia, and is estimated to be prevalent in 2.
16) Patients frequently present with symptoms of diplopia, blur, asthenopia, headache, phOtophobia, dry eye, reduced blink rate, visual field loss, nystagmus, as well as difficulties with fixation and tracking.
Charles DePrince, president, Fuji Health Science, Burlington, NJ, agreed that asthenopia has become "epidemic" over the past 10 years as a result of ubiquitous devices like computers, cell phones and iPods.
Professor Shigeaki Ohno of Hokkaido University, Department of Ophthalmology & Visual Science, described that astaxanthin supplementation in randomized double-blind placebo controlled studies led to a reduction of visual asthenopia (eye fatigue symptoms) and higher accommodation levels (switching focus between two fixed distances).
All convergence anomalies are associated with asthenopia and diplopia at near with a relative exo deviation at near too.