Programm                 "Degeneration und Regeneration– Grundlagen, Diagnostik und Therapie"


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Abstract
Abstract

Adequate Approach in Ocular Electrophysiology: Multifocal ERG, Full-field ERG or Pattern VEP

U. Kellner, H. Kraus
Augenklinik, Universitätsklinikum Benjamin Franklin, Freie Universität berlin

Purpose: Pattern VEP, full field ERG and multifocal ERG (mfERG) have been established as electrophysiologic methods for evaluation of macular function. Indications for the choice of the different methods and their combined application are still under discussion.
Method: Analysis of the use of the different methods in one electrophysiologic laboratory since regular use of all three methods (1998-2002) in accordance with guidelines and standard of the International Society for Clinical Electrophysiology of Vision (ISCEV).
Results: In the period mentioned above, 1145 VEPs, 876 ERGs and 813 mfERGs were recorded. In 355 patients ERG and mfERG were combined, in 166 patients VEP and mfERG and in 135 VEP and ERG were recorded. In 65 patients all three methods were used. It has to be considered, that due to time limitations and other problems not always all methods that were considered helpful could be used. Especially the VEP could not be recorded in some cases due to application of mydriatic drops.
Conclusions: Based on our experience the VEP is the method of choice in all cases with suspected disturbances of the postretinal visual apthway and unspecific visual problems, in the latter cases combination with the mfERG is helpful. The ERG is indicated when generalized retinal disorders are suspected, it can be combined for specific evaluation of the macula with a mfERG. The mfERG is m


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