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Related Concept Videos

Multiple Sclerosis l: Introduction01:19

Multiple Sclerosis l: Introduction

Multiple sclerosis is a chronic autoimmune disease of the central nervous system (CNS) that affects the brain, spinal cord, and optic nerves. It is an inflammatory demyelinating disorder and a leading cause of neurological disability in young adults.EpidemiologyMS commonly begins between 20 and 40 years of age and is twice as common in women. Its exact cause remains unclear, but genetic susceptibility contributes, with higher risk in first-degree relatives and identical twins. A greater...
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Encephalitis is inflammation of the brain parenchyma caused by direct viral invasion or immune-mediated mechanisms triggered by infections or tumors. Both processes lead to neuronal injury, disrupted neurotransmission, and diverse neurological symptoms, often with overlapping clinical and pathological features.Autoimmune EncephalitisIn autoimmune encephalitis, antibodies target neuronal antigens on cell surfaces, synapses, or within neurons. A key example is anti-NMDAR encephalitis, which can...

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Related Experiment Video

Updated: Jun 12, 2026

Dynamic Visual Tests to Identify and Quantify Visual Damage and Repair Following Demyelination in Optic Neuritis Patients
12:23

Dynamic Visual Tests to Identify and Quantify Visual Damage and Repair Following Demyelination in Optic Neuritis Patients

Published on: April 14, 2014

[Optic neuritis, multiple sclerosis-related or not: structural and functional study].

C Oreja-Guevara1, S Noval, B Manzano

  • 1Servicio de Neurología, Unidad de Neuroinmunología Clínica y Esclerosis Múltiple, Hospital Universitario La Paz, Madrid, España. orejacbn@gmail.com

Neurologia (Barcelona, Spain)
|May 22, 2010
PubMed
Summary

Optical coherence tomography (OCT) detects early axonal damage in multiple sclerosis (MS) patients, even in unaffected eyes. This structural biomarker correlates with visual acuity and visual field functional alterations.

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Area of Science:

  • Neuroscience
  • Ophthalmology

Context:

  • Multiple sclerosis (MS) is a neuroinflammatory disease characterized by demyelination and axonal degeneration.
  • Optical coherence tomography (OCT) offers noninvasive quantification of the retinal nerve fiber layer (RNFL) thickness.

Purpose:

  • To assess RNFL thickness in MS patients with or without prior optic neuritis (ON).
  • To evaluate RNFL thickness in patients with ON.
  • To correlate structural damage (RNFL thickness) with functional visual alterations (visual acuity and visual field).

Summary:

  • A study compared RNFL thickness, visual acuity (VA), and visual field (VF) in three groups: ON patients, MS patients with ON, and MS patients without ON.
  • OCT revealed significantly thicker RNFL in the unaffected eyes of ON patients compared to other groups.
  • While affected eyes showed no significant differences, unaffected eyes displayed significant differences in VA and VF among groups.

Impact:

  • OCT can serve as an early structural biomarker for axonal damage in MS.
  • The findings highlight the relationship between structural optic nerve damage and functional visual impairments in MS.
  • Early detection of axonal damage via OCT may inform disease management and monitoring strategies.