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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
November 5, 2007
November 6, 2007
August 8, 2011
August 2006
July 2008   (Final data collection date for primary outcome measure)
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Complete list of historical versions of study NCT00553761 on ClinicalTrials.gov Archive Site
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PERG and mfPERG in Band Atrophy
Pattern Electroretinogram and Multifocal Pattern Electroretinogram For the Detection of Neural Loss in Patients With Permanent Temporal Visual Field Defect From Chiasmal Compression
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.
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Observational
Observational Model: Cohort
Time Perspective: Prospective
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Non-Probability Sample
Patients with band atrophy from chismal compression and controls
Band Atrophy
Device: Pattern electroretinogram
Full field and hemifield (nasal and temporal) stimulation transient pattern electroretinogram (PERG) were recorded both in patients and controls.
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*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
30
July 2009
July 2008   (Final data collection date for primary outcome measure)

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
Sexes Eligible for Study: All
18 Years to 75 Years   (Adult, Senior)
No
Contact information is only displayed when the study is recruiting subjects
Brazil
 
 
NCT00553761
654/06
FAPESP 06/61549-6; 07/54142-0)
No
Not Provided
Not Provided
Mario Luiz Ribeiro Monteiro/University of Sao Paulo, University of Sao Paulo
University of Sao Paulo
Fundação de Amparo à Pesquisa do Estado de São Paulo
Study Chair: Mário Luiz R Monteiro, PhD University of Sao Paulo
University of Sao Paulo
November 2007