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Related Concept Videos

Angle Closure Glaucoma: Treatment01:28

Angle Closure Glaucoma: Treatment

622
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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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

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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Focusing of Light in the Eye01:16

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Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
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At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
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Related Experiment Video

Updated: Aug 23, 2025

Full-Circle Cauterization of Limbal Vascular Plexus for Surgically Induced Glaucoma in Rodents
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[Angle-closure glaucoma].

Iwona Krzyzanowska1, Marc Töteberg-Harms2

  • 1Augenklinik, Stadtspital Triemli, Zürich, Schweiz.

Die Ophthalmologie
|October 27, 2022
PubMed
Summary
This summary is machine-generated.

Angle-closure glaucoma is a rare eye condition where the anterior chamber angle narrows, obstructing aqueous humor outflow and increasing intraocular pressure. Treatment involves medications and surgical interventions like laser iridotomy.

Keywords:
Intraocular pressureIridotomyNarrow chamber angleSurgeryTopical medications

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Area of Science:

  • Ophthalmology
  • Glaucoma Research

Context:

  • Angle-closure glaucoma (ACG) is a rare subtype of glaucoma.
  • Characterized by narrow or occluded anterior chamber angles.
  • Leads to obstructed aqueous humor outflow and elevated intraocular pressure.

Purpose:

  • To summarize the key aspects of angle-closure glaucoma.
  • To outline the clinical presentation and diagnostic features.
  • To review current and potential treatment strategies.

Summary:

  • ACG presents with symptoms such as severe eye pain, headache, blurred vision, a mid-dilated rigid pupil, conjunctival hyperemia, and nausea.
  • Diagnostic evaluation focuses on identifying the narrow or occluded anterior chamber angle.
  • Treatment options encompass topical and systemic medications, alongside surgical interventions like cataract surgery and laser iridotomy.

Impact:

  • Provides a concise overview for clinicians and researchers.
  • Highlights the importance of timely diagnosis and intervention in ACG.
  • Informs therapeutic decision-making for managing elevated intraocular pressure.