Multifocal Electroretinography (mERG): Normative values and a new clinical analysis procedure
نویسندگان
چکیده
منابع مشابه
Multifocal electroretinography as a function of age: the importance of normative values for older adults.
PURPOSE To determine the influence of age on local electroretinographic responses in humans. METHODS Multifocal electroretinograms (mfERGs) were obtained from 62 normally sighted subjects ranging in age from 21 to 81 years. A stimulus array of 103 scaled hexagons was used to measure electrical signals within a retinal area approximately 46 degrees in diameter. Commonly reported mfERG methods ...
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Full field electroretinography (ffERG) or conventional electroretinography represents the summed electrical response of the entire retina evoked by a flash light from an arc bowl (Ganzfeld stimulus bow) scattered in the eye through a dilated pupil. Clinical applications of ffERG were initiated in the 1940s, therefore clinical and basic studies on ERG date back to several decades. In 1989, the I...
متن کاملValidation of a new fiber electrode prototype for clinical electroretinography.
PURPOSE To validate a new fiber electrode prototype for clinical electroretinography (ERG). METHODS A recently developed prototype of a disposable reference-coupled fiber electrode (patent pending Brazilian Institute of Industrial Property # PI0602186-7), including one fiber for corneal signals and a second fiber acting as reference was tested in a group of 20 healthy volunteers (17-31 years;...
متن کاملClinical Usefulness of Binocular Multifocal Electroretinography in Patients with Monocular Macular Disease
PURPOSE To evaluate the clinical usefulness of binocular multifocal electroretinography (mfERG) by comparing results with conventional monocular mfERG in patients with monocular macular disease. METHODS mfERG testing was conducted on 32 patients with monocular macular disease and 30 normal subjects. An initial mfERG was simultaneously recorded from both eyes with two recording electrodes unde...
متن کاملMultifocal Electroretinography after High Dose Chloroquine Therapy for Malaria
PURPOSE To investigate changes in multifocal electroretinography (mfERG) parameters associated with high dose chloroquine therapy for treatment of malaria in the Amazonia region of Brazil. METHODS Forty-eight subjects who had received chloroquine treatment for single or multiple malaria infections with a cumulative dose ranging from 1,050 to 27,000mg were included. The control group consisted...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2004
ISSN: 1534-7362
DOI: 10.1167/4.8.759