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Related Concept Videos

Glaucoma: Overview01:25

Glaucoma: Overview

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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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Open Angle Glaucoma: Treatment01:27

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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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Regulation of Angiogenesis and Blood Supply01:24

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Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits.  Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
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Related Experiment Video

Updated: Mar 29, 2026

Glaucoma-inducing Procedure in an In Vivo Rat Model and Whole-mount Retina Preparation
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[Vascular factors in glaucoma].

B Mottet1, F Aptel2, M Geiser3

  • 1Université Joseph-Fourier - Grenoble 1, 38041 Grenoble, France; Clinique universitaire d'ophtalmologie, CHU de Grenoble, 38043 Grenoble, France.

Journal Francais D'Ophtalmologie
|November 25, 2015
PubMed
Summary
This summary is machine-generated.

Glaucoma

Keywords:
EndothelinEndothélineFlux sanguin oculaireFluxmétrie laser DopplerGlaucome primitif à angle ouvertGlaucome à pression normaleIntraocular pressureLaser Doppler flowmetryNitric oxideNormal-tension glaucomaOcular blood flowOcular perfusion pressureOxyde nitriquePression de perfusion oculairePression intraoculairePrimary open-angle glaucoma

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Related Experiment Videos

Last Updated: Mar 29, 2026

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Area of Science:

  • Ophthalmology
  • Vascular Biology
  • Neuroscience

Context:

  • The precise mechanisms driving glaucoma pathophysiology remain elusive.
  • Vascular factors are increasingly recognized as critical in glaucoma development.
  • Current understanding necessitates advanced methods for assessing ocular hemodynamics.

Purpose:

  • To explore the role of vascular pathophysiology in glaucoma.
  • To highlight the importance of measuring ocular blood flow and vascular topography.
  • To investigate the mechanisms underlying glaucomatous neuropathy.

Summary:

  • Reduced ocular perfusion pressure and impaired vascular autoregulation are linked to glaucoma.
  • Decreased ocular blood flow is observed early in primary open-angle glaucoma and normal-pressure glaucoma.
  • Glaucomatous vascular damage affects multiple ocular territories, marked by reduced basal flow and vasoregulatory dysfunction.

Impact:

  • This research underscores the significance of vascular dysfunction in glaucoma progression.
  • It emphasizes the need for integrated approaches combining hemodynamic and neuro-ophthalmologic assessments.
  • Findings may inform novel therapeutic strategies targeting ocular blood flow and vascular health in glaucoma patients.