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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

Angle Closure Glaucoma: Treatment

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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: May 6, 2026

Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential
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Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential

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[Structural diagnostics of course observation for glaucoma].

C Y Mardin1

  • 1Universitätsaugenklinik Erlangen, Schwabachanlage 6, 91054, Erlangen, Deutschland, Christian.mardin@uk-erlangen.de.

Der Ophthalmologe : Zeitschrift Der Deutschen Ophthalmologischen Gesellschaft
|November 16, 2013
PubMed
Summary

Glaucoma progression can be imaged and measured using various techniques, including optical coherence tomography (OCT). Differentiating glaucoma-related structural loss from age-related changes is crucial for accurate diagnosis and monitoring.

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Area of Science:

  • Ophthalmology
  • Medical Imaging
  • Neuroscience

Context:

  • Glaucoma is a chronic degenerative optic neuropathy characterized by progressive structural damage.
  • Accurate measurement of neuroretinal rim, retinal nerve fibre layer, and ganglion cell layer is essential for monitoring glaucoma.
  • Current imaging modalities include disc photography, laser scanning tomography, scanning laser polarimetry, and optical coherence tomography (OCT).

Purpose:

  • To review the current methods for imaging and measuring structural progression in glaucoma.
  • To highlight the quantitative and qualitative criteria for assessing glaucoma progression.
  • To emphasize the role of advanced imaging techniques like OCT in glaucoma management.

Summary:

  • Structural loss in glaucoma, affecting the optic disc and retinal layers, can be quantified annually.
  • Optical coherence tomography (OCT) offers sensitive measurements of the macula ganglion cell complex, potentially exceeding retinal nerve fibre layer thickness sensitivity.
  • Qualitative signs such as papillary hemorrhage and vascular changes also indicate structural progression.

Impact:

  • Provides a comprehensive overview of glaucoma imaging and measurement techniques.
  • Facilitates early detection and monitoring of glaucoma progression through quantitative and qualitative assessments.
  • Supports ophthalmologists in evaluating structural changes and making informed clinical decisions for glaucoma patients.