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Glaucoma: Overview

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...

Angle Closure Glaucoma: Treatment

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...

Open Angle Glaucoma: Treatment

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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Related Experiment Video

Updated: May 22, 2026

Full-Circle Cauterization of Limbal Vascular Plexus for Surgically Induced Glaucoma in Rodents

Full-Circle Cauterization of Limbal Vascular Plexus for Surgically Induced Glaucoma in Rodents

Published on: February 15, 2022

Refractory secondary glaucoma-clinical case.

I R Barac¹, M D Pop, F Baltă

¹Department of Ophthalmology, Carol Davila University of Medicine and Pharmacy, Bucharest. Ramona.barac@live.com

Journal of Medicine and Life

|May 11, 2012

Summary

This summary is machine-generated.

Ahmed valve implantation offers a successful surgical option for refractory secondary glaucoma, particularly after vitreoretinal surgery when other treatments fail. This artificial drainage device helps manage intraocular pressure and preserve vision.

Keywords:

Ahmed valve glaucoma oil silicon

Related Experiment Videos

Last Updated: May 22, 2026

Full-Circle Cauterization of Limbal Vascular Plexus for Surgically Induced Glaucoma in Rodents

Full-Circle Cauterization of Limbal Vascular Plexus for Surgically Induced Glaucoma in Rodents

Published on: February 15, 2022

Area of Science:

Ophthalmology
Glaucoma Research
Surgical Innovation

Background:

Glaucomatous disease management aims to reduce intraocular pressure (IOP) and preserve vision.
Refractory glaucoma cases pose challenges despite medical, laser, and conventional surgical interventions.
Secondary glaucoma following ocular surgery, like vitrectomy, can be particularly difficult to treat.

Observation:

A case study details a patient with secondary glaucoma refractory to medical treatment post-cataract surgery and vitrectomy.
This patient's elevated intraocular pressure persisted despite prior interventions.
The need for alternative treatment strategies in complex glaucoma cases was highlighted.

Findings:

Ahmed valve implantation, an artificial drainage device (ADD), was utilized for the refractory glaucoma.
The Ahmed valve served as a viable alternative when conventional treatments and trabeculectomy were not suitable.
This approach demonstrated success in managing intraocular pressure in a complex glaucoma case.

Implications:

Artificial drainage systems can be considered as a primary surgical option for specific refractory glaucomas.
Vitreoretinal surgeons should be aware of secondary glaucoma as a complication and its management options.
The Ahmed valve provides a crucial treatment pathway for patients unresponsive to standard glaucoma therapies.