Multifocal ERG in Ethambutol Associated Visual Loss

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Multifocal ERG in ethambutol associated visual loss.

AIM To determine the anatomical site and extent of electrophysiological dysfunction in patients with ethambutol associated visual loss. METHODS A comparative case series. Four patients with ethambutol associated visual loss underwent multifocal electroretinography (mERG). Two patients had advanced visual loss while two had early signs of toxicity. The N1-P1, N1, P1 amplitudes, N1, and P1 late...

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Recording of both VEP and multifocal ERG for evaluation of unexplained visual loss electrophysiology in unexplained visual loss.

The purpose of this retrospective study was to determine the relevance of both visual-evoked potentials (VEP) and multifocal electroretinography (mfERG) to evaluate unexplained visual loss. Seventy-two consecutive patients (1996-2002) with visual disturbances of unknown origin underwent both VEP and mfERG (ISCEV standard). The mean age was 42.4 years (11.8-74.5) and median visual acuity 0.5 (no...

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Multifocal ERG responses in infants.

PURPOSE To assess function of the central retina in 10-week-old infants, multifocal electroretinograms (mfERGs) were recorded. mfERG responses represent postreceptor retinal activity. METHODS In infants (n = 23) and adults (n = 10), mfERG responses to both unscaled and scaled 61 hexagon arrays were recorded. Amplitude and implicit time of negative (N(1), N(2)) and positive (P(1)) peaks of the...

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Multifocal visual evoked potential in nonorganic visual field loss.

OBJECTIVE To evaluate the use of multifocal visual evoked potentials in the diagnosis of nonorganic visual field loss. METHODS Five patients with unexplained visual field loss underwent full neuro-ophthalmic examination, Humphrey visual field testing, and multifocal visual evoked potential testing using the Accumap objective perimeter (ObjectiVision Pty Ltd, Sydney, Australia). RESULTS In a...

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Non-organic Visual Loss in Patients with Multifocal Intraocular Lenses

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ژورنال

عنوان ژورنال: Yearbook of Ophthalmology

سال: 2006

ISSN: 0084-392X

DOI: 10.1016/s0084-392x(08)70367-8