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The pattern electroretinogram: technical aspects and clinical significance.

S Rimmer1, B Katz

  • 1Department of Ophthalmology, University of California, San Diego, La Jolla 92093.

Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society
|January 1, 1989
PubMed
Summary

The pattern electroretinogram (PERG) assesses retinal function, influenced by stimulus, patient factors, and conditions like glaucoma. This review covers its technical aspects and clinical significance in neurophysiology.

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Area of Science:

  • Ophthalmology
  • Neurophysiology

Background:

  • The pattern electroretinogram (PERG) is a neurophysiologic tool for assessing retinal function.
  • It is believed to originate from retinal ganglion cells.

Purpose of the Study:

  • To review the technical aspects of the PERG.
  • To discuss the clinical significance of the PERG in various ocular conditions.

Main Methods:

  • Review of existing literature on PERG.
  • Analysis of factors influencing PERG generation and interpretation.

Main Results:

  • PERG is affected by stimulus parameters (type, spatial/temporal frequency, luminance, contrast), recording methods (waveform processing, electrodes, montage), and patient-specific factors (age, refractive error).

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  • Clinical applications include diagnosing and monitoring glaucoma, ocular hypertension, optic neuritis, other optic neuropathies, maculopathies, and amblyopia.

    • Conclusions:

    • The PERG is a valuable, albeit complex, tool for evaluating retinal ganglion cell function.
    • Understanding the factors influencing PERG is crucial for accurate clinical interpretation.