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Related Concept Videos

Cranial and Spinal Meninges01:19

Cranial and Spinal Meninges

The cranial and spinal meninges are complex protective structures surrounding the central nervous system (CNS), consisting of the brain and spinal cord. These meninges consist of the dura mater, the arachnoid mater, and the pia mater. They protect the CNS, provide structural support, and aid in circulating cerebrospinal fluid (CSF).
Cranial Meninges
These meningeal layers cover the cranium. The dura mater is the outermost layer of cranial meninges. It is a thick and durable membrane of dense...
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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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Nervous Tissue: Glial Cells

Glia, or neuroglia, are vital support cells that assist neurons in their functions. The term "glia" originates from the Greek word for "glue," reflecting their role in holding the nervous system together. These cells can be categorized into six types: four in the central nervous system (CNS) and two in the peripheral nervous system (PNS).
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Open Angle Glaucoma: Treatment

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Drugs such as carbonic anhydrase inhibitors, α2- and...

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Related Experiment Video

Updated: Jun 15, 2026

Optic Nerve Sheath Point of Care Ultrasound: Image Acquisition
06:09

Optic Nerve Sheath Point of Care Ultrasound: Image Acquisition

Published on: August 18, 2023

[Optic nerve sheath meningiomas].

C F Litre1, P Colin, P Rousseaux

  • 1Département de neurochirurgie, hôpital Maison-Blanche, CHU de Reims, 45, rue Cognaq-Jay, 51100 Reims, France.

Neuro-Chirurgie
|March 16, 2010
PubMed
Summary
This summary is machine-generated.

Optic nerve sheath meningiomas are a common optic nerve tumor. Fractionated stereotactic radiotherapy (RSF) is the preferred treatment for controlling tumor growth and preserving vision.

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Optic Nerve Transection: A Model of Adult Neuron Apoptosis in the Central Nervous System
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Published on: May 12, 2011

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Last Updated: Jun 15, 2026

Optic Nerve Sheath Point of Care Ultrasound: Image Acquisition
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Optic Nerve Transection: A Model of Adult Neuron Apoptosis in the Central Nervous System
12:06

Optic Nerve Transection: A Model of Adult Neuron Apoptosis in the Central Nervous System

Published on: May 12, 2011

Area of Science:

  • Ophthalmology
  • Neurosurgery
  • Radiation Oncology

Background:

  • Optic nerve sheath meningiomas represent a significant portion of optic nerve tumors.
  • These tumors are rare, constituting 1-2% of all meningiomas and 2-3.5% of orbital tumors.
  • Vision loss is the primary clinical manifestation.

Purpose of the Study:

  • To highlight the diagnostic and therapeutic standards for optic nerve sheath meningiomas.
  • To emphasize the role of fractionated stereotactic radiotherapy in managing these tumors.

Main Methods:

  • Diagnosis is typically confirmed through neuroradiological evaluation.
  • Fractionated stereotactic radiotherapy (RSF) is employed as the primary treatment modality.

Main Results:

  • RSF has demonstrated efficacy in controlling tumor volume.
  • The treatment is effective in preserving visual acuity in patients.

Conclusions:

  • Optic nerve sheath meningiomas require prompt diagnosis and management.
  • Fractionated stereotactic radiotherapy is the established gold standard for treating these tumors, balancing tumor control and visual function preservation.