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Related Concept Videos

Glaucoma: Overview01:25

Glaucoma: Overview

973
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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Open Angle Glaucoma: Treatment01:27

Open Angle Glaucoma: Treatment

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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.
Drugs such as carbonic anhydrase inhibitors, α2- and...
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Angle Closure Glaucoma: Treatment01:28

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Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
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Related Experiment Video

Updated: Oct 16, 2025

Trabecular Meshwork Response to Pressure Elevation in the Living Human Eye
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The trabecular meshwork in glaucoma: An inflammatory trabeculopathy?

D Cela1, F Brignole-Baudouin2, A Labbé3

  • 1Service d'ophtalmologie, centre hospitalier national d'ophtalmologie des Quinze-Vingts, IHU FOReSIGHT, 28, rue de Charenton, 75012 Paris, France.

Journal Francais D'Ophtalmologie
|October 18, 2021
PubMed
Summary

Inflammation in the trabecular meshwork contributes to glaucoma by increasing intraocular pressure (IOP). Understanding trabecular inflammation is key to developing new glaucoma treatments.

Keywords:
GlaucomaInflammationOcular surfaceTrabecular meshwork

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Area of Science:

  • Ophthalmology
  • Immunology
  • Cell Biology

Background:

  • Glaucoma is an optic neuropathy linked to elevated intraocular pressure (IOP).
  • Trabecular meshwork dysfunction, driven by oxidative stress and senescence, increases resistance to aqueous humor outflow.
  • Inflammatory mechanisms in glaucoma pathophysiology are increasingly recognized but poorly understood, especially within the trabecular meshwork.

Purpose of the Study:

  • To synthesize current knowledge on the role and mechanisms of inflammation in the healthy and glaucomatous trabecular meshwork.
  • To explore the contribution of trabecular inflammation to glaucoma pathophysiology.
  • To review the impact of cellular senescence, oxidative stress, and eye drop preservatives on trabecular inflammation.

Main Methods:

  • Literature review focusing on inflammation in glaucoma.
  • Analysis of mechanisms underlying cellular senescence and oxidative stress in the trabecular meshwork.
  • Examination of inflammatory mediators within the trabecular meshwork.
  • Review of ocular surface and trabecular meshwork toxicity from glaucoma eye drops and preservatives.

Main Results:

  • Inflammatory processes affect all ocular structures in glaucoma, stemming from dysregulated para-inflammation.
  • Retinal inflammation accelerates retinal ganglion cell (RGC) degeneration, and ocular surface inflammation is worsened by preserved eye drops.
  • Pathophysiology of trabecular meshwork inflammation in glaucoma remains largely unknown.

Conclusions:

  • Trabecular inflammation is a significant, yet understudied, factor in glaucoma development and progression.
  • Further research into trabecular meshwork inflammation mechanisms is crucial for novel therapeutic strategies.
  • The toxicity of glaucoma eye drops and preservatives may exacerbate trabecular inflammation and ocular surface disease.