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Loss Of Visual Field Due To Brain Injury
Patients who have had a stroke or traumatic brain injury, may lose one half of their side vision to the right or left. This type of side vision loss is called"Hemianopsia" (hemi field loss). Patients who just have a hemianopsia are aware of the side vision loss and often can be easily taught to scan their eyes in the direction of the hemianopsia, in order to compensate for the field loss. This allows them to not miss things on the side of the hemianopsia.
"Neglect" is the inattention to, or lack of awareness of visual space to the right or left and is most often associated with a hemianopsia. The lesion in the brain causing neglect usually occurs in the right frontal-parietal lobe, resulting in a left side neglect. Some patients just have a hemianopsia with no neglect, but others may experience a lot of "neglect" and may be unaware that they can not see to the affected side.
Specially designed and prescribed "Side Vision Awareness Glasses". These custom made glasses allow an immediate increase in side vision awareness. This helps reduce hemianopsia-related safety issues and enhances the patient's performance of many activities of daily living. "Side Vision Awareness Glasses" cost about $2,500.