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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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Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential
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Published on: May 25, 2020

A survey and comparative study on the instruments for glaucoma detection.

Teik-Cheng Lim1, Subhagata Chattopadhyay, U Rajendra Acharya

  • 1School of Science and Technology, SIM University, Singapore 599491, Singapore. alan_tc_lim@yahoo.com

Medical Engineering & Physics
|August 25, 2011
PubMed
Summary
This summary is machine-generated.

This paper reviews diagnostic tools for glaucoma, a leading cause of irreversible blindness. It details the mechanisms, pros, and cons of tonometers, gonioscopes, OCTs, SLPs, SLOs, and pachymeters for glaucoma management.

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Area of Science:

  • Ophthalmology
  • Medical Diagnostics
  • Optic Neuropathy

Background:

  • Glaucoma is a primary cause of irreversible blindness globally.
  • Intraocular pressure is implicated as a key factor in glaucoma development.
  • Accurate diagnosis and management are crucial for preventing vision loss.

Purpose of the Study:

  • To survey diagnostic instruments used in glaucoma care.
  • To explain the working principles of key glaucoma diagnostic tools.
  • To compare the advantages and disadvantages of various glaucoma diagnostic devices.

Main Methods:

  • Review of tonometers for intraocular pressure measurement.
  • Analysis of gonioscopes for anterior chamber angle assessment.
  • Evaluation of optical coherence tomography (OCT) for optic nerve imaging.
  • Survey of scanning laser polarimetry (SLP) and scanning laser ophthalmoscopy (SLO) for retinal nerve fiber layer analysis.
  • Assessment of corneal pachymetry for corneal thickness measurement.

Main Results:

  • Each instrument offers unique insights into glaucoma pathophysiology.
  • Tonometry, gonioscopy, OCT, SLP, SLO, and pachymetry provide complementary diagnostic information.
  • Understanding instrument limitations and strengths is key for effective glaucoma management.

Conclusions:

  • A comprehensive approach utilizing multiple diagnostic instruments improves glaucoma detection and monitoring.
  • The selection of appropriate diagnostic tools depends on clinical context and specific diagnostic needs.
  • Continued advancements in imaging technology enhance glaucoma diagnosis and patient outcomes.