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The experience of eye strain when reading in dim light has given rise to the common misconception that such an activity causes permanent eye damage. [3] When concentrating on a visually intense task, such as continuously focusing on a book or computer monitor, the ciliary muscles and the extraocular muscles are strained. This causes discomfort ...
This neurological phenomenon is characterized by a sustained dystonic, conjugate, involuntary upward deviation of both eyes lasting seconds to hours. The term oculogyric is applied in reference to the simultaneous upward movement of both eyes, although the reaction may encompass a variety of additional responses. [ 1 ]
This, unaware to them, causes the eye strain to build up over a period of time, when if they had obtained seven to eight hours of uninterrupted sleep, their eye muscles would have recovered during the sleep and the strain would not have built up. [citation needed] Computer workers are often advised to take breaks and look at distant objects. [4]
The characteristic head tilt is usually away from the affected side to reduce eye strain and prevent double vision . Old photographs may reveal the presence of a consistent head tilt (ocular torticollis) from an early age. Most people with congenital CN IV palsy have facial asymmetry due to the chronic head tilt.
Ocular neurosis is the usual cause of eye strain headache that begins abruptly with use of the eyes in which there is a normal ophthalmologic exam. [ 1 ] ICD classification: F45.8 Neurosis ocular [ 2 ]
Changes in the eye can help predict other health concerns in the body, such as diabetes and high blood pressure. A new study has identified a set of 29 vascular health indicators on the retina ...
Retinal migraine is associated with transient monocular visual loss in one eye lasting less than one hour. [1]During some episodes, the visual loss may occur with no headache and at other times throbbing headache on the same side of the head as the visual loss may occur, accompanied by severe light sensitivity and/or nausea.
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