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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...

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...

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...

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Related Experiment Video

Updated: May 21, 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

Animal models of glaucoma.

Rachida A Bouhenni¹, Jeffrey Dunmire, Abby Sewell

¹Department of Ophthalmology, Summa Health System, Akron, OH 44304, USA.

Journal of Biomedicine & Biotechnology

|June 6, 2012

Summary

Glaucoma research uses various animal models, but no single model perfectly replicates the complex disease. This review summarizes current models, their pros and cons, and criteria for developing better glaucoma study models.

Area of Science:

Ophthalmology
Neuroscience
Veterinary Medicine

Background:

Glaucoma is a leading cause of irreversible blindness globally, characterized by retinal ganglion cell loss and optic nerve damage.
Despite extensive research, the complex pathophysiologic mechanisms underlying glaucoma remain incompletely understood.
Various animal models are employed to investigate glaucoma, yet an ideal model is lacking.

Purpose of the Study:

To review existing animal models used for glaucoma research.
To analyze the strengths and limitations of each model.
To propose criteria for developing a more suitable glaucoma model.

Main Methods:

Comprehensive literature review of animal models used in glaucoma studies.
Analysis of species-specific characteristics relevant to glaucoma pathology.

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Evaluation of the utility and drawbacks of each model.

Main Results:

A wide array of animal species, including non-human primates, canines, felines, and rodents, have been utilized.
Each model offers unique insights but also possesses inherent limitations in fully recapitulating human glaucoma.
No single animal model currently serves as a perfect analogue for all facets of glaucoma.

Conclusions:

Current animal models provide valuable data but do not fully capture glaucoma's complexity.
Further development is needed to create more accurate and comprehensive models for glaucoma research.
Establishing clear criteria can guide the development of superior animal models for studying glaucoma pathogenesis and testing therapeutics.