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PERG and mfPERG in Band Atrophy

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT00553761
First Posted: November 6, 2007
Last Update Posted: August 8, 2011
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Collaborator:
Fundação de Amparo à Pesquisa do Estado de São Paulo
Information provided by:
University of Sao Paulo
  Purpose
The study is designed to evaluate the ability of pattern electroretinogram (PERG) and multifocal pattern electroretinogram (mfPERG) to measure and identify the pattern of band atrophy of the optic nerve in patients with long standing chiasmal lesions. The hypothesis is that these electrophysiological tests were able to identify this such pattern. The idea is to investigate the ability of the these electrophysiological technics in detecting the neural loss from chiasmal compression and to evaluate the ability of PERG and mfPERG parameters to differentiate between eyes with band atrophy of the optic nerve and healthy eyes.

Condition Intervention
Band Atrophy Device: Pattern electroretinogram

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective
Official Title: Pattern Electroretinogram and Multifocal Pattern Electroretinogram For the Detection of Neural Loss in Patients With Permanent Temporal Visual Field Defect From Chiasmal Compression

Further study details as provided by University of Sao Paulo:

Estimated Enrollment: 30
Study Start Date: August 2006
Study Completion Date: July 2009
Primary Completion Date: July 2008 (Final data collection date for primary outcome measure)
Intervention Details:
    Device: Pattern electroretinogram
    Full field and hemifield (nasal and temporal) stimulation transient pattern electroretinogram (PERG) were recorded both in patients and controls.
  Eligibility

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 75 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Patients with band atrophy from chismal compression and controls
Criteria

Inclusion Criteria:

  1. Visual acuity better than 20/30
  2. Refractive error less 5 spherical diopter and 3 cylinder diopter
  3. Temporal field defect

Exclusion Criteria:

  1. Presence of glaucoma and optic nerve anomalies
  2. Anormal nasal field
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00553761


Locations
Brazil
Universidade de São Paulo
São Paulo, Brazil, 05403-000
Sponsors and Collaborators
University of Sao Paulo
Fundação de Amparo à Pesquisa do Estado de São Paulo
Investigators
Study Chair: Mário Luiz R Monteiro, PhD University of Sao Paulo
  More Information

Additional Information:
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: Mario Luiz Ribeiro Monteiro/University of Sao Paulo, University of Sao Paulo
ClinicalTrials.gov Identifier: NCT00553761     History of Changes
Other Study ID Numbers: 654/06
FAPESP 06/61549-6; 07/54142-0)
First Submitted: November 5, 2007
First Posted: November 6, 2007
Last Update Posted: August 8, 2011
Last Verified: November 2007

Keywords provided by University of Sao Paulo:
Band atrophy
Pattern electroretinogram
Chiasmal compression
Neural loss
Electrophysiological tests

Additional relevant MeSH terms:
Atrophy
Pathological Conditions, Anatomical