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Related Experiment Videos

Correlation between morphological and functional retinal impairment in multiple sclerosis patients.

V Parisi1, G Manni, M Spadaro

  • 1Cattedra di Clinica Oculistica, Università di Roma Tor Vergata, Italy. vparisi@tin.it

Investigative Ophthalmology & Visual Science
|October 6, 1999
PubMed
Summary

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Multiple sclerosis patients with prior optic neuritis show reduced optic nerve fiber layer thickness. This thinning correlates with pattern electroretinogram (PERG) changes, but not visual evoked potential (VEP) alterations.

Area of Science:

  • Ophthalmology
  • Neuroscience
  • Clinical Research

Background:

  • Multiple sclerosis (MS) is a demyelinating disease affecting the central nervous system.
  • Optic neuritis, a common MS manifestation, can lead to long-term visual pathway damage.
  • Assessing retinal and visual pathway function is crucial for understanding MS progression.

Purpose of the Study:

  • To investigate the relationship between optic nerve fiber layer (NFL) thickness and retinal/visual pathway function in MS patients post-optic neuritis.
  • To determine if NFL thinning correlates with functional deficits in the visual system.

Main Methods:

  • Optical coherence tomography (OCT) measured NFL thickness (Overall and Temporal) in 14 MS patients with prior optic neuritis and 14 controls.
  • Pattern electroretinograms (PERGs) and visual evoked potentials (VEPs) assessed retinal and visual pathway function using checkerboard stimuli.

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  • Data analysis focused on correlations between NFL thickness and electrophysiological parameters.

    • Main Results:

    • MS patients exhibited significantly reduced NFL thickness (Overall and Temporal) compared to controls (P < 0.01).
    • PERGs and VEPs showed significant latency delays and amplitude reductions (P < 0.01).
    • NFL thickness correlated significantly with PERG P50 latency and P50-N95 amplitude (P < 0.01) for 15-min arc checks.

    Conclusions:

    • A significant correlation exists between reduced NFL thickness and PERG alterations in MS patients recovering from optic neuritis.
    • No significant correlation was found between NFL thickness and VEP changes in this patient cohort.