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Related Concept Videos

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...
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...
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...

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Related Experiment Videos

Lasers in primary open angle glaucoma.

Ramanjit Sihota1

  • 1Glaucoma Research Facility and Clinical Services, Dr Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India. rjsihota@hotmail.com

Indian Journal of Ophthalmology
|December 15, 2010
PubMed
Summary
This summary is machine-generated.

Laser trabeculoplasty (LT) offers a way to lower intraocular pressure (IOP) in primary open angle glaucoma (POAG) by enhancing aqueous outflow. While effective for many, its long-term IOP-lowering effects can vary, necessitating ongoing management.

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Area of Science:

  • Ophthalmology
  • Medical Technology

Background:

  • Primary open angle glaucoma (POAG) management often involves medical and surgical therapies.
  • Laser trabeculoplasty (LT) has emerged as a therapeutic option for POAG.
  • The goal of LT is to improve aqueous humor outflow and reduce intraocular pressure (IOP).

Purpose of the Study:

  • To review the applications and efficacy of laser trabeculoplasty in treating POAG.
  • To explore the mechanisms of IOP reduction through LT.
  • To discuss alternative laser procedures like laser thermal sclerostomy.

Main Methods:

  • Application of argon, diode, or selective laser energy to the trabecular meshwork.
  • Utilizing longer infrared wavelengths for scleral perforation in laser thermal sclerostomy.
  • Review of existing literature on laser treatments for glaucoma.

Main Results:

  • Approximately 75% of patients experience a significant IOP reduction after argon laser trabeculoplasty (ALT).
  • Selective laser trabeculoplasty (SLT) shows similar efficacy to ALT in lowering IOP.
  • A notable percentage (around 10% annually) may experience an IOP increase over time.

Conclusions:

  • LT is a valuable adjunct therapy for POAG, though not always a permanent solution.
  • Laser thermal sclerostomy offers a minimally invasive alternative to traditional filtration surgeries.
  • Further research into long-term efficacy and patient selection for LT is warranted.