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Multifocal Visual Evoked Potential in Normal Subjects
Journal of the Korean Ophthalmological Society ; : 532-541, 2010.
Artículo en Coreano | WPRIM | ID: wpr-105760
ABSTRACT

PURPOSE:

To introduce the clinical utility of multifocal visual evoked potential (mfVEP) and to assess the waveform from normal Korean subjects.

METHODS:

mfVEP with 4 channel recording was performed using the RETIscan(R) system (Roland Consult, Wiesbaden, Germany) for 25 eyes of 25 normal subjects. Amplitudes and implicit times were obtained from ring-shaped 6 areas and 4 sectors. To investigate the false-positive ratio of the examination, stimuli were given with one-half of the CRT monitor completely covered and the results were compared.

RESULTS:

Amplitudes of P1, N2 were larger in the central 10degrees area than other areas (p<0.001). Amplitudes were reduced and implicit times were prolonged on peripheral areas. P1 amplitudes were larger in the inferior field. Waves with large amplitudes by noise were recorded in 13.7% of covered areas.

CONCLUSIONS:

mfVEP is useful tool to detect local optic nerve damage and rule out the non-organic cause of visual field defect. However, mfVEP results are difficult to interpret due to noise and poor patient cooperation. Standardization of mfVEP is necessary for its application.
Asunto(s)

Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Nervio Óptico / Compuestos Organotiofosforados / Campos Visuales / Cooperación del Paciente / Potenciales Evocados Visuales / Ojo / Ruido Idioma: Coreano Revista: Journal of the Korean Ophthalmological Society Año: 2010 Tipo del documento: Artículo

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Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Nervio Óptico / Compuestos Organotiofosforados / Campos Visuales / Cooperación del Paciente / Potenciales Evocados Visuales / Ojo / Ruido Idioma: Coreano Revista: Journal of the Korean Ophthalmological Society Año: 2010 Tipo del documento: Artículo