Status:
ACTIVE_NOT_RECRUITING
Clinical Trial of Multi-Periscopic Prism Glasses for Hemianopia
Lead Sponsor:
Massachusetts Eye and Ear Infirmary
Collaborating Sponsors:
National Eye Institute (NEI)
Conditions:
Homonymous Hemianopia
Eligibility:
All Genders
7+ years
Phase:
NA
Brief Summary
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 fiel...
Detailed Description
Patients with hemianopic field loss may be unaware of objects in their blind (non-seeing) hemi-field and often experience difficulties with hazards, such as walking into obstacles on the side of the f...
Eligibility Criteria
Inclusion
- 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
- 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
Key Trial Info
Start Date :
October 3 2022
Trial Type :
INTERVENTIONAL
Allocation :
ACTUAL
End Date :
April 30 2026
Estimated Enrollment :
64 Patients enrolled
Trial Details
Trial ID
NCT04827147
Start Date
October 3 2022
End Date
April 30 2026
Last Update
June 24 2025
Active Locations (8)
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1
UAB Center for Low Vision Rehabilitation, Callahan Eye Hospital
Birmingham, Alabama, United States, 35233
2
UCHealth Sue Anschutz-Rodgers Eye Center
Denver, Colorado, United States, 80045
3
Visual Health and Surgical Center
Palm Springs, Florida, United States, 33461
4
Illinois College of Optometry
Chicago, Illinois, United States, 60616