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Related Concept Videos

Glaucoma: Overview01:25

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: 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...
Angle Closure Glaucoma: Treatment01:28

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: Jun 6, 2026

Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential
07:11

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

Published on: May 25, 2020

A review of current technology used in evaluating visual function in glaucoma.

Angela V Turalba1, Cynthia Grosskreutz

  • 1Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA 02114, USA. Angela_Turalba@meei.harvard.edu

Seminars in Ophthalmology
|November 25, 2010
PubMed
Summary

Glaucoma diagnosis relies on visual field testing, but current methods like Standard Automated Perimetry (SAP) have limitations. Newer functional tests aim to improve early glaucoma detection and monitoring accuracy.

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Area of Science:

  • Ophthalmology
  • Neuroscience

Background:

  • Glaucoma is a leading cause of blindness characterized by optic nerve damage and vision loss.
  • Automated perimetry is crucial for diagnosing and monitoring glaucoma.
  • Current functional tests face challenges in early detection and tracking progression.

Purpose of the Study:

  • To highlight the limitations of Standard Automated Perimetry (SAP) in glaucoma diagnosis.
  • To discuss the need for improved functional tests for early glaucoma detection.
  • To explore advancements in glaucoma monitoring and neuroprotection research.

Main Methods:

  • Review of current automated perimetry techniques.
  • Analysis of the limitations of Standard Automated Perimetry (SAP).
  • Discussion of emerging functional tests and algorithms for glaucoma assessment.

Main Results:

  • Retinal ganglion cell loss can precede detectable defects in SAP.
  • SAP is subjective and exhibits inter-test variability, complicating progression evaluation.
  • Newer functional tests are being developed to enhance diagnostic accuracy.

Conclusions:

  • Early glaucoma detection remains challenging with existing functional tests.
  • Improved functional testing is essential for accurate glaucoma diagnosis and management.
  • Advancements in neuroprotection research are crucial for combating glaucoma-related vision loss.