Feasibility Tests for Various Prism Configurations for Visual Field Loss

Part of paid clinical trials in Boston, Massachusetts.

Sponsor
Massachusetts Eye and Ear Infirmary
Study ID
NCT04424979
Status
Recruiting
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Conditions

  • Hemianopia, Homonymous
  • Tunnel Vision
  • Visual Field Constriction Bilateral
  • Visual Field Defect Homonymous Bilateral
  • Visual Field Defect, Peripheral

Eligibility Criteria

Sex
ALL
Age
7 Years - 80 Years
Healthy Volunteers
Not accepted

Interventions

  • High power prisms — DEVICE
    High power prisms designed to shift images from blind areas into portions of the wearer's remaining, seeing, field of vision

Study Details

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.

Key Dates

Start date
Nov 6, 2020
Status verified
Sep 2025
Primary completion
Aug 31, 2026
Completion
Dec 31, 2026

Study Design

Enrollment
20 participants (estimated)
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
DEVICE_FEASIBILITY

Arms

  • Experimental: High power prisms
    Various configurations of high power prisms will be developed for each individual and custom fit into spectacles lenses.

Primary Outcome Measure

Field of view expansion [ Time Frame: Through study completion, an average of four months ]

Central Contacts

Locations (1)

FacilityCityStateZIPSite coordinators
Schepens Eye Research InstituteBostonMassachusetts02114-

Find similar trials in Boston, MA

By research site
Schepens Eye Research Institute· Boston, MA

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