Clinical Trial of Multi-Periscopic Prism Glasses for Hemianopia

Running, not enrolling · Not applicable

Conditions studied: Homonymous Hemianopia

In brief

This clinical trial will evaluate the efficacy of two types of high-power prism glasses that provide field of view expansion for patients with homonymous hemianopia (the complete loss of half the field of vision on the same side in both eyes).

Key facts

Study ID

NCT04827147

Run by

Massachusetts Eye and Ear Infirmary

People needed

64

Starts

2022-10-03

Expected to finish

2026-04-30

Last updated by the study team

2026-03-13

Who can join

Age: 7 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• 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

You may not qualify if…

• 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

Where it is running

• UAB Center for Low Vision Rehabilitation, Callahan Eye Hospital — Birmingham, Alabama, United States
• UCHealth Sue Anschutz-Rodgers Eye Center — Denver, Colorado, United States
• Visual Health and Surgical Center — Palm Springs, Florida, United States
• Illinois College of Optometry — Chicago, Illinois, United States
• Schepens Eye Research Institute — Boston, Massachusetts, United States
• New England College of Optometry — Boston, Massachusetts, United States
• The Eye and Vision Center at MCPHS — Worcester, Massachusetts, United States
• UMass Chan Medical School — Worcester, Massachusetts, United States

Full record on ClinicalTrials.gov

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