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Related Experiment Video

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Dynamic Visual Tests to Identify and Quantify Visual Damage and Repair Following Demyelination in Optic Neuritis Patients
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Acute optic neuritis: What do complementary tests add to diagnosis?

Victoria Carla Fernandez1, Andres Maria Villa1

  • 1Sección de Neuroinmunología, División Neurología. Hospital J. M. Ramos Mejía. Centro Universitario de Neurología. Universidad de Buenos Aires (UBA), Buenos Aires, Argentina; Centro Argentino de Neuroinmunología (CADENI), Facultad de Medicina. Universidad de Buenos Aires, Argentina.

Multiple Sclerosis and Related Disorders
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PubMed
Summary

Clinical assessment, including low contrast visual acuity, is superior for diagnosing acute optic neuritis (AON) compared to imaging or electrophysiology. However, optical coherence tomography (OCT) and visual evoked potentials (VEP) aid in predicting AON severity and visual outcomes.

Keywords:
Magnetic resonance imagingOptic neuritisOptical coherence tomographyVisual evoked potentials

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Area of Science:

  • Neuro-ophthalmology
  • Immunology
  • Medical Imaging

Background:

  • Optic neuritis (ON) is an optic nerve inflammation often caused by immune responses.
  • Diagnosing ON can be challenging due to subtle symptoms.
  • The utility of complementary tests in the acute phase of ON requires further investigation.

Purpose of the Study:

  • To evaluate the diagnostic and prognostic utility of clinical assessment, OCT, VEP, and MRI in acute ON (AON).

Main Methods:

  • A cross-sectional study included 75 eyes from 34 patients with ON within 90 days of symptom onset.
  • Neuro-ophthalmological evaluation, OCT, VEP, and MRI were performed.
  • Sensitivity, specificity, and predictive values for diagnosis and severity assessment were determined.

Main Results:

  • Low contrast visual acuity (LCVA) showed 100% sensitivity for ON diagnosis, outperforming OCT and VEP.
  • Orbit MRI had 100% specificity for confirming ON diagnosis.
  • Ganglion cell + inner plexiform layer (GCIP) thickness and VEP P100 latency/amplitude correlated significantly with visual acuity (VA).
  • Combined RNFL and GCIP measurements explained 60% of VA variation.

Conclusions:

  • Clinical assessment, particularly contrast sensitivity, is superior for diagnosing AON compared to OCT and VEP.
  • OCT (GCIP thickness) and VEP (amplitude) provide valuable prognostic information for AON.
  • These prognostic indicators may guide prompt, aggressive treatment strategies for AON.