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Clinical Trial of Peripheral Prism Glasses for Hemianopia

NCT00494676 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 73

Last updated 2017-04-04

Study results available
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Summary

The purpose of this study is to evaluate the functional utility for general mobility (walking) of new high power permanent peripheral prism glasses, which provide visual field expansion device for patients with homonymous hemianopia (the complete loss of half the field of vision on the same side in both eyes). The efficacy of real peripheral prism glasses will be assessed relative to sham peripheral prism glasses.

Conditions

  • Homonymous Hemianopia

Interventions

DEVICE

High power (57 prism diopter) peripheral prism glasses

All patients will wear two pairs of prism glasses in a crossover design: the high power peripheral prism glasses and sham peripheral prism glasses. Each pair of prism glasses will be worn for four weeks

DEVICE

Low power sham peripheral prism glasses

Low power (5 prism dioptre) prism glasses that provide only about 2 degrees of visual field expansion.

Sponsors & Collaborators

  • Chadwick Optical Inc.

    collaborator INDUSTRY

  • National Eye Institute (NEI)

    collaborator NIH

  • Alexandra Bowers

    lead OTHER

Principal Investigators

  • Alex R Bowers, PhD · Schepens Eye Research Institute

  • Karen Keeney, MSBA · Chadwick Optical Inc.

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
CROSSOVER

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2007-09-30
Primary Completion
2009-07-31
Completion
2010-04-30

Countries

  • United States
  • United Kingdom

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00494676 on ClinicalTrials.gov