Actively Recruiting
Feasibility Tests for Various Prism Configurations for Visual Field Loss
Led by Massachusetts Eye and Ear Infirmary · Updated on 2025-09-23
20
Participants Needed
1
Research Sites
316 weeks
Total Duration
On this page
Sponsors
M
Massachusetts Eye and Ear Infirmary
Lead Sponsor
N
National Eye Institute (NEI)
Collaborating Sponsor
AI-Summary
What this Trial Is About
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 walking. The study will involve multiple visits (typically four) to Schepens Eye Research Institute for fitting and testing with the prism glasses. The overall objective is to determine best designs and fitting parameters for implementation in prism devices for future clinical trials.
CONDITIONS
Official Title
Feasibility Tests for Various Prism Configurations for Visual Field Loss
Who Can Participate
Eligibility Criteria
You may qualify if you...
- 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
You will not qualify if you...
- 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)
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Trial Site Locations
Total: 1 location
1
Schepens Eye Research Institute
Boston, Massachusetts, United States, 02114
Actively Recruiting
Research Team
A
Alex Bowers
CONTACT
How is the study designed?
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
NA
Model
SINGLE_GROUP
Primary Purpose
DEVICE_FEASIBILITY
Number of Arms
1
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