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KMID : 0616619990050020281
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Journal of Soonchunhyang Medical College
1999 Volume.5 No. 2 p.281 ~ p.292
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Basis and Clinical Evaluation of Multifocal Electroretinogram
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Abstract
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Purpose: To compare the Multi-focal electroretinogram(ERG) system to conventional Ganzfeld and focal ERGs obtained from patients with known retinal diseases in order to assess its clinical applicability.
Methods: A multi-input system analysis was used to explore the field topography of ERG responses to local luminance modulaton in patients with retinitis pigmentosa, pericentral pigmentary retinal dystrophy, branch retinal arterial occlusion or idiopathic macular hole.
Results: The dysfunctional areas measured by multifocal ERG were well compatible to those assumed by combined findings of Ganzfeld and focal ERGs However, the wave shapes of multi-focal ERG in the retina with arterial occlusion differed from those of conventional focal ERG, suggesting that the negative and negative and positive deflections shown in the first order kernel of multi-focal ERG may not correspond to conventional a - and b- waves of ERG.
Conclusions: The multi-focal ERG system is available for electroretinographic field mapping at the clinical level.
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