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Multifocal Electroretinograms
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Pattern ERG in central serous retinopathy.

Jawahar Lal Goyal1, Basudeb Ghosh, Vishram Sangit

  • 1Guru Nanak Eye Centre, Maulana Azad Medical College, Maharaja Ranjeet Singh Marg, New Delhi, 110002, India.

Documenta Ophthalmologica. Advances in Ophthalmology
|December 28, 2014
PubMed
Summary
This summary is machine-generated.

Pattern electroretinogram (PERG) shows reduced P50 amplitude in central serous retinopathy (CSR), indicating macular photoreceptor dysfunction. Even after recovery, a residual deficit in PERG suggests vision quality issues in CSR patients.

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Area of Science:

  • Ophthalmology
  • Neuroscience
  • Retinal Imaging

Background:

  • Central serous retinopathy (CSR) is a condition affecting the macula.
  • Understanding the functional impact of CSR on retinal electrophysiology is crucial.

Purpose of the Study:

  • To evaluate the pattern electroretinogram (PERG) in patients with central serous retinopathy (CSR).
  • To assess the functional status of macular photoreceptors in CSR.

Main Methods:

  • Prospective study of 20 patients with recent onset unilateral CSR.
  • Involved fellow eye as control, evaluating best-corrected visual acuity (BCVA), psychophysical tests, FFA, OCT, and flash and pattern ERG.

Main Results:

  • Mean P50 amplitude was significantly reduced in affected eyes compared to normal eyes (2.36 ± 0.8 μv vs 3.24 ± 0.85 μv).
  • A 27% reduction in P50 amplitude persisted even after 12 weeks (P < 0.001).
  • N95 wave amplitude was also significantly reduced (19.77%, P < 0.001), with significant improvement in psychophysical tests at 12 weeks.

Conclusions:

  • PERG P50 component reduction indicates functional disturbance of macular photoreceptors in CSR.
  • Normal flash ERG suggests macula-specific pathology, sparing the general retina.
  • Residual PERG deficit explains persistent visual quality issues despite normal visual acuity and retinal anatomy.