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Related Concept Videos

Open Angle Glaucoma: Treatment01:27

Open Angle Glaucoma: Treatment

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: Treatment

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: Overview

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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Ophthalmic drug delivery faces major limitations due to poor absorption across the corneal membrane. This process is primarily driven by diffusion and is influenced by two main factors: the physicochemical properties of the drug and tear drainage. Most ophthalmic drugs, such as pilocarpine, epinephrine, atropine, and local anesthetics, are weak bases. They are typically formulated at an acidic pH to enhance chemical stability. However, this leads to high ionization, reducing their ability to...
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Accessory Structures of the Eye

Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...

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Updated: Jul 19, 2026

Ultrasound Cyclo Plasty in Eyes with Glaucoma
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Published on: January 26, 2018

[Practical measures. When ocular hypertension is unilateral].

E Sellem1

  • 1Centre Ophtalmologie Kléber, 50 Cours F. Roosevelt, 69006 Lyon. esellem@aol.com

Journal Francais D'Ophtalmologie
|October 31, 2006
PubMed
Summary

Diagnosing unilateral ocular hypertension can be challenging. This study highlights difficult-to-recognize conditions like pseudo-exfoliative syndrome and pigmentary dispersion, emphasizing diagnostic techniques.

Area of Science:

  • Ophthalmology
  • Glaucoma Research
  • Ocular Diagnostics

Context:

  • Unilateral ocular hypertension, including glaucoma, presents diagnostic challenges.
  • Several conditions causing unilateral ocular hypertension are frequent or difficult to diagnose etiologically.
  • Accurate diagnosis is crucial for effective management and preventing vision loss.

Purpose:

  • To review and highlight diagnostic challenges in unilateral ocular hypertension.
  • To discuss specific conditions such as pseudo-exfoliative syndrome, pigmentary dispersion, ocular contusion, Posner-Schlossman syndrome, and iridocorneal endothelial syndromes.
  • To emphasize the importance of advanced diagnostic techniques like gonioscopy and high-magnification observation.

Summary:

  • Pseudo-exfoliative syndrome and pigmentary dispersion syndrome can be difficult to identify without specific signs, often requiring gonioscopy.

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Last Updated: Jul 19, 2026

Ultrasound Cyclo Plasty in Eyes with Glaucoma
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Full-Circle Cauterization of Limbal Vascular Plexus for Surgically Induced Glaucoma in Rodents
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Full-Circle Cauterization of Limbal Vascular Plexus for Surgically Induced Glaucoma in Rodents

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  • Ocular contusion diagnosis relies on patient history and gonioscopy; Posner-Schlossman syndrome requires high magnification for subtle precipitates.
  • Iridocorneal endothelial syndromes, including essential iris atrophy, Cogan-Reese, and Chandler disease, necessitate gonioscopy and corneal analysis for diagnosis.
  • Impact:

    • Improved diagnostic accuracy for unilateral ocular hypertension.
    • Enhanced understanding of subtle clinical presentations of various glaucoma-related conditions.
    • Guidance for clinicians on utilizing specific diagnostic tools for challenging cases.