Other names: scotoma
Failure of field of view can be caused by diseases of the eye, optic nerve and blood vessels that nourish the eye.
When inflammation of the optic nerve is a gradual loss of vision over hours to days and is usually preceded by a dull pain behind the eye.
May be the first symptom of multiple sclerosis.
The gradual loss of peripheral vision is typical of oppression nerve adenoma (benign tumor) of the pituitary gland.
When blockage of an artery nourishing the retina is a sudden loss of vision and needs to begin to heal as quickly as possible to restore the function of the retina could. The problem in the vascular system may also cause a disease called amaurosis fugax, which is a disease manifested by a temporary loss of sight for a few seconds to minutes, and it’s a warning flag insufficiency of local circulation.
Retinal contrast, is perceived as a gray shade in the visual field.
In disorders of vision must quickly consult an ophthalmologist or neurologist, especially blood supply must be treated quickly to prevent loss of vision.
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