Status:
RECRUITING
Feasibility Tests for Various Prism Configurations for Visual Field Loss
Lead Sponsor:
Massachusetts Eye and Ear Infirmary
Collaborating Sponsors:
National Eye Institute (NEI)
Conditions:
Hemianopia, Homonymous
Tunnel Vision
Eligibility:
All Genders
7-80 years
Phase:
NA
Brief Summary
The investigators will develop and test different configurations of high-power prisms to expand the field of vision of patients with visual field loss to assist them with obstacle detection when walki...
Eligibility Criteria
Inclusion
- Visual field loss, either peripheral field loss or hemianopic field loss
- Visual acuity of at least 20/50 in the better eye
- In sufficiently good health to be able to complete sessions lasting 2-4 hours
- Able to independently walk short distances
- Able to give voluntary, informed consent
- Able to speak English
Exclusion
- Any physical or mental impairments, including cognitive dysfunction, balance problems or other deficits that could impair the ability to walk or use the prism spectacles
- A history of seizures in the last 6 months
- Hemispatial neglect (subjects with hemianopic field loss only)
Key Trial Info
Start Date :
November 6 2020
Trial Type :
INTERVENTIONAL
Allocation :
ESTIMATED
End Date :
December 1 2026
Estimated Enrollment :
20 Patients enrolled
Trial Details
Trial ID
NCT04424979
Start Date
November 6 2020
End Date
December 1 2026
Last Update
September 23 2025
Active Locations (1)
Enter a location and click search to find clinical trials sorted by distance.
1
Schepens Eye Research Institute
Boston, Massachusetts, United States, 02114