Detection of Topographic Residual Acuity in Patients With Age Related Macular Degeneration

May 22, 2008 updated by: University Health Network, Toronto

Standard perimetry provides information on topographical retinal sensitivity to light stimuli, however the said locus is not necessarily the preferred locus for fixation. Standard perimetry could also be used as a way for macular scotoma mapping, indirectly showing the fixation locus. Topographic acuity at the preferred retinal locus can be determined if correlation between loci with high sensitivity, eccentric fixation loci and potential visual acuity measurements are correlated.

PURPOSE OF THE STUDY:

Determination of visual acuity at preferred retinal locus in Low Vision patients with ARMD using eye standard automated and computerized perimetry methods.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Anticipated)

30

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Canada
    • Ontario
      • Toronto, Ontario, Canada, M6H 2H1
        • Dr S N Markowitz

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • AMD with documented pathology
  • Low Vision both eyes
  • BCVA 20/50-20/400 in best eye

Exclusion Criteria:

  • Cognitive impairment
  • Other retinal pathology
  • Previous retinal surgery
  • Significant media opacity

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Diagnostic
  • Allocation: Non-Randomized
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Location of eccentric retinal locus of highest fixation accuracy

Secondary Outcome Measures

Outcome Measure
Location of eccentric locus with best retinal sensitivity

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University Health Network, Toronto

Investigators

  • Principal Investigator: Samuel Markowitz, MD, University Health Network, Toronto

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

April 1, 2006

Primary Completion (Actual)

January 1, 2008

Study Completion (Actual)

January 1, 2008

Study Registration Dates

First Submitted

May 23, 2006

First Submitted That Met QC Criteria

May 23, 2006

First Posted (Estimate)

May 24, 2006

Study Record Updates

Last Update Posted (Estimate)

May 28, 2008

Last Update Submitted That Met QC Criteria

May 22, 2008

Last Verified

November 1, 2006

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • SNM200601

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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