PERG and mfPERG in Band Atrophy

University of Sao Paulo

Status: Completed

Conditions: Band Atrophy

Treatments: Device: Pattern electroretinogram

Study type: Observational

Funder types: Other

Identifiers

NCT00553761

654/06

FAPESP 06/61549-6 07/54142-0);

Details and patient eligibility

About

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.

Enrollment: 30 estimated patients

Sex: All

Ages: 18 to 75 years old

Volunteers: No Healthy Volunteers

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