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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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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.
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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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Related Experiment Video

Updated: Jul 23, 2025

Iris Fixation via External Pentagram Suturing

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Published on: May 5, 2022

Eyewatch adjustable drainage device in vitrectomized eyes with refractory glaucoma.

Alfonso Savastano^1,2, Gloria Gambini^1,2, Matteo Mario Carlà^1,2

¹Ophthalmology Unit, "Fondazione Policlinico Universitario A. Gemelli IRCCS", Rome, Italy.

European Journal of Ophthalmology

|July 12, 2023

Summary

The eyeWatch adjustable glaucoma drainage device offers safe and effective post-operative intraocular pressure control in vitrectomized eyes. This system allows gradual flow regulation, minimizing complications in patients with glaucoma after vitreoretinal surgery.

Keywords:

BGIrveldt Glaucoma drainage device eyeWatch glaucoma surgery long tube

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Area of Science:

Ophthalmology
Glaucoma Surgery
Medical Devices

Background:

Glaucoma management after vitreoretinal surgery presents unique challenges.
Vitrectomized eyes are at higher risk for hypotony-related complications.
The eyeWatch adjustable glaucoma drainage system was evaluated for use in these eyes.

Purpose of the Study:

To assess the efficacy and safety of the eyeWatch adjustable system.
To evaluate its performance in vitrectomized eyes with glaucoma.

Main Methods:

A prospective, non-comparative case series involving 2 patients.
Glaucoma drainage device implantation with the eyeWatch system.
Monitoring of intraocular pressure, medication use, and complications.

Main Results:

No early or late complications were observed in the operated eyes.
Initial high intraocular pressure (IOP) was effectively managed by adjusting the eyeWatch system.
Stable IOP (10-15 mmHg) was achieved and maintained for six months post-surgery.

Conclusions:

The eyeWatch adjustable system enables safe and gradual IOP regulation post-operatively.
It is an effective and safe technique for managing glaucoma in eyes following vitreoretinal surgery.
This system helps mitigate hypotony-related complications in a vulnerable patient group.