Clinical Trial of Multi-Periscopic Prism Glasses for Hemianopia

Inclusion Criteria: * Homonymous hemianopia with or without macular sparing for at least 3 months * Visual acuity of at least 20/50 in each eye, with correction if needed * Refractive error in the -12D to +5D range * Able to walk independently, using a cane or walker if needed * Able to communicate in English sufficiently to understand the study procedures and how to use the prisms Exclusion Criteria: * Central visual field loss in the seeing hemifield of either eye (e.g. from macular degeneration, glaucoma, diabetic retinopathy or other maculopathies) * Hemi-spatial neglect * Significant cognitive impairment * Dementia * Any other physical or mental disabilities, or general health problems that could impair the ability to be independently mobile (i.e., walk ), participate in the VR walking simulator test or use the prism glasses