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[Reproducibility of the pattern electroretinogram]

T Otto1, M Bach

  • 1Universitäts-Augenklinik, Freiburg im Breisgau.

Der Ophthalmologe : Zeitschrift Der Deutschen Ophthalmologischen Gesellschaft
|March 1, 1997
PubMed
Summary
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The pattern electroretinogram (PERG) shows good reproducibility for assessing retinal ganglion cell function, with slightly better results under steady-state stimulation. This study confirms PERG

Area of Science:

  • Ophthalmology
  • Neuroscience
  • Visual Electrophysiology

Context:

  • The pattern electroretinogram (PERG) is a key diagnostic tool for evaluating retinal ganglion cell function.
  • Previous studies on PERG reproducibility have yielded conflicting results.
  • Standardized testing conditions are crucial for reliable electrophysiological measurements.

Purpose:

  • To investigate the reproducibility of the PERG under conditions aligned with upcoming International Society for Clinical Electrophysiology of Vision (ISCEV) guidelines.
  • To compare the reproducibility of PERG with simultaneously recorded visual evoked potentials (VEPs).
  • To assess the influence of stimulation type (transient vs. steady-state) and electrode placement on PERG reproducibility.

Summary:

  • PERG and VEP were recorded in 42 eyes using phase-reversing checkerboard stimuli under transient (2 rps) and steady-state (16 rps) conditions.

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  • Measurements were repeated after one week to assess intersession reproducibility.
  • The coefficient of variation (CV) for PERG amplitude was 7% (steady-state) and 9% (transient), with a CV of 1.5% for PERG latency. PERG reproducibility was found to be slightly higher than VEP reproducibility.

    • Impact:

    • This study provides robust evidence for the reproducibility of PERG measurements when conducted under standardized conditions.
    • The findings support the use of PERG as a reliable indicator of retinal ganglion cell function.
    • The results offer valuable data for the finalization of ISCEV guidelines for PERG testing.