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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

Trabeculectomy in patients with primary angle-closure glaucoma.

Yi-Hao Chen1, Da-Wen Lu, Jen-Hao Cheng

  • 1Department of Ophthalmology, Tri-Service General Hospital, Taipei, Taiwan.

Journal of Glaucoma
|December 17, 2009
PubMed
Summary

Trabeculectomy outcomes differ between acute and chronic angle-closure glaucoma. Acute angle-closure glaucoma patients experienced worse visual acuity, higher complication rates, and more surgical failures compared to chronic cases.

Related Experiment Videos

Area of Science:

  • Ophthalmology
  • Glaucoma Surgery

Background:

  • Primary angle-closure glaucoma (PACG) is a leading cause of blindness.
  • Trabeculectomy is a common surgical procedure for glaucoma management.

Purpose of the Study:

  • To compare trabeculectomy outcomes in patients with acute primary angle-closure glaucoma (AACG) versus chronic primary angle-closure glaucoma (CACG).

Main Methods:

  • Retrospective case series analysis of 52 eyes from 2001-2004 in Taiwan.
  • Outcomes assessed included intraocular pressure (IOP), visual acuity changes, and complications.
  • Patients were divided into AACG (15 eyes) and CACG (37 eyes) groups.

Main Results:

  • Trabeculectomy showed significantly worse IOP control in the AACG group compared to the CACG group (P<0.01).
  • The AACG group had a higher incidence of bleb encapsulation (P=0.02) and poorer visual acuity outcomes (P=0.02).
  • Mean follow-up was 32 months.

Conclusions:

  • Trabeculectomy may be less effective for AACG compared to CACG.
  • AACG patients face increased risks of worsened visual acuity, higher complication rates, and greater surgical failure.
  • Further research may be needed to optimize surgical strategies for AACG.