PERG and mfPERG in Band Atrophy

University of Sao Paulo30 enrolled

Overview

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.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Band Atrophy

Interventions

Pattern electroretinogramDEVICE

Full field and hemifield (nasal and temporal) stimulation transient pattern electroretinogram (PERG) were recorded both in patients and controls.

Eligibility

Sex: ALLMin age: 18 YearsMax age: 75 Years

Medical Language ↔ Plain English

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

Locations (1)

Universidade de São Paulo

São Paulo, São Paulo, Brazil

Data from ClinicalTrials.gov

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