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In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
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Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
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Updated: Oct 5, 2025

Dynamic Visual Tests to Identify and Quantify Visual Damage and Repair Following Demyelination in Optic Neuritis Patients
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Update on Optic Neuritis: An International View.

Simon J Hickman1, Axel Petzold2,3,4,5

  • 1Department of Neurology, Royal Hallamshire Hospital, Sheffield, UK.

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|January 31, 2022
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Summary
This summary is machine-generated.

Optic neuritis management is evolving with new antibody discoveries. This review surveys global incidence, features, and outcomes, comparing them to the Optic Neuritis Treatment Trial to guide future research.

Keywords:
Optic neuritiscorticosteroidsepidemiologyglobal healthmyelin oligodendrocyte antibody diseaseneuromyelitis optica spectrum disorder

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Area of Science:

  • Neuro-ophthalmology
  • Immunology
  • Clinical Neurology

Background:

  • Optic neuritis was traditionally classified as typical (idiopathic or MS-related) or atypical.
  • Recent advances highlight the role of neuromyelitis optica spectrum disorder and MOG antibody disease.
  • The Optic Neuritis Treatment Trial (ONTT) significantly impacted global treatment protocols.

Purpose of the Study:

  • To review the international literature on adult optic neuritis.
  • To determine global incidence and seropositivity rates for anti-aquaporin 4 and anti-MOG antibodies.
  • To document and compare presenting features, treatments, and outcomes of optic neuritis subtypes with the ONTT cohort.

Main Methods:

  • Systematic survey of international literature on adult optic neuritis.
  • Analysis of reported incidence, serological findings (anti-aquaporin 4, anti-MOG), and clinical data.
  • Comparison of findings with the historical Optic Neuritis Treatment Trial (ONTT) cohort.

Main Results:

  • Incidence of optic neuritis varies globally.
  • Prevalence of anti-aquaporin 4 and anti-MOG antibodies in optic neuritis cases is documented.
  • Clinical presentations, treatments, and outcomes differ across optic neuritis subtypes and geographic regions.

Conclusions:

  • Current management of optic neuritis faces ambiguities in the era of antibody testing.
  • Recommendations are proposed for future optic neuritis treatment trials.
  • This review provides a framework for understanding and managing diverse optic neuritis presentations globally.