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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.
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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: May 20, 2026

Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential

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Published on: May 25, 2020

[Visual field progression in glaucoma: cluster analysis].

H Bresson-Dumont¹, J Hatton, J Foucher

¹Département glaucome, clinique Sourdille, 8, rue Camille-Flammarion, 44000 Nantes, France. hbressondumont@free.fr

Journal Francais D'Ophtalmologie

|July 10, 2012

Summary

This summary is machine-generated.

The EyeSuite™ Octopus Perimetry Clusters algorithm detected visual field progression in one-third of glaucoma patients whose global indices showed no significant changes. This cluster analysis offers a valuable tool for monitoring glaucoma progression, especially when traditional methods are inconclusive.

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Published on: February 15, 2022

Area of Science:

Ophthalmology
Visual field analysis
Glaucoma diagnostics

Context:

Glaucoma monitoring relies heavily on visual field progression analysis.
Differentiating true progression from random fluctuation is challenging with current algorithms.
Global indices (MD, sLV) and pointwise linear regression have limitations in detecting localized deficits or handling low sensitivity points.

Purpose:

To evaluate the efficacy of the EyeSuite™ Octopus Perimetry Clusters algorithm in detecting visual field progression.
To analyze visual field progression in patients with stable global indices and no significant pointwise linear regression worsening.
To compare cluster analysis with traditional trend analysis methods in glaucoma monitoring.

Summary:

The study analyzed visual fields of 162 eyes from 100 patients with ocular hypertension or glaucoma.
Fifty-four eyes (33.33%) showed significant worsening in cluster analysis despite stable global indices and no significant pointwise linear regression changes.
Eyes with cluster progression had more advanced glaucoma (MD 6.41 dB vs. 2.87 dB) and 64.82% showed no significant change in pointwise linear regression.

Impact:

The EyeSuite™ Octopus Perimetry Clusters algorithm demonstrates potential for identifying subtle visual field progression missed by global indices and pointwise linear regression.
Cluster analysis may improve the detection of localized visual field deficits in glaucoma.
Combining cluster analysis with other tests and morphological examination is recommended for optimal glaucoma monitoring.