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      Comparison of Electro-Oculogram Recording Methods

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          Abstract

          The purpose of this study was to compare the variability of the amplitude ratios and latencies of the electro-oculogram (EOG) light peak (LP) in three different recording conditions: Arden ratio (dark trough (DT): 12 min), modified Arden ratio (DT: 15 min) and light peak/dark baseline ratio (LP/BL: 35 min of dark adaptation). Additionally, EOGs from eyes with dilated and undilated pupils were recorded. The light intensity stimulating the eyes with dilated pupils was attenuated 1 log unit. The EOG amplitude ratios displayed no significant difference between the three conditions tested. The comparison of implicit times (time from onset of light exposure to LP) revealed significantly (p < 0.001) shorter values when the recording of the LP was preceded by a dark adaptation of 35 min. The broadening of the curves in DT/LP recordings might be caused by a superposition of a residual dark oscillation on the LP. The recordings from eyes with dilated pupils – stimulated with 1 log unit lower intensity – revealed lower amplitude ratios than the recordings from eyes with undilated pupils.

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          Author and article information

          Journal
          ORE
          Ophthalmic Res
          10.1159/issn.0030-3747
          Ophthalmic Research
          S. Karger AG
          0030-3747
          1423-0259
          1993
          1993
          11 December 2009
          : 25
          : 4
          : 245-252
          Affiliations
          Department of Ophthalmology, University of Vienna, Austria
          Article
          267320 Ophthalmic Res 1993;25:245–252
          10.1159/000267320
          8233350
          © 1993 S. Karger AG, Basel

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          Page count
          Pages: 8
          Categories
          Original Paper

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