HEMIANOPSIA
Abstract:
Hemianopsia, sometimes called Hemianopia, is blindness in one half of the visual field. This loss can be caused by a variety of medical conditions, of which stroke is among the most commonly experienced. Hemianopsia is a functional defect which can affect the right or left side. Stroke patients with weakness of, for example, the right arm and leg have right sided poor vision. Some people lose sight mostly in the upper or lower part of the affected side, whereas others lose sight completely on all of the affected side. Where the stroke has affected the right arm and leg, right sided vision can be affected. Heteronymous hemianopsia affecting the nasal or the temporal half of the field of vision of each eye. Homonymous hemianopsia affecting the right halves or the left halves of the visual fields of the two eyes. Scotoma - an area of lost or depressed vision within the visual field, surrounded by an area of less depressed or of normal vision.
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