"A patient with this condition may be unaware of what he or she cannot see and frequently bumps into walls, trips over objects or walks into people on the side where the visual field is missing.

Vascular and neoplastic (malignant or benign tumours) lesions from the optic tract, to visual cortex can cause a contralateral homonymous hemianopsia.

A stroke on the right side of the brain (especially parietal lobe), in addition to producing a homonymous hemianopsia, may also lead to the syndrome of hemispatial neglect.

[7] Computed tomography (CT scan) or MRI can be used to investigate if stroke, tumor, structural lesion, or demyelination is the cause of homonymous hemianopsia.

Occlusion of the calcarine artery that results in infarction of the superior part of the occipital lobe causes a lower peripheral visual field defect.

Higher power Fresnel ("stick-on") prisms are commonly employed because they are thin and lightweight, and can be cut and placed in different positions on a spectacle lens.

These high power prisms "create" artificial peripheral vision into the non-blind field for obstacle avoidance and motion detection.