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Management of Primary Angle-Closure Glaucoma.

Jimmy Lai1, Bonnie N K Choy, Jennifer W H Shum

  • 1From the Department of Ophthalmology, The University of Hong Kong, Hong Kong, China.

Asia-Pacific Journal of Ophthalmology (Philadelphia, Pa.)
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Summary

Primary angle-closure glaucoma (PACG) management focuses on lowering eye pressure and reopening drainage angles. Various surgical options exist, including trabeculectomy and cataract extraction, each with unique benefits and drawbacks.

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Area of Science:

  • Ophthalmology
  • Glaucoma Research
  • Surgical Interventions

Background:

  • Primary angle-closure glaucoma (PACG) is a progressive optic neuropathy characterized by optic disc cupping and visual field loss.
  • It results from ocular hypertension due to drainage angle closure, caused by iris-trabecular meshwork contact.
  • Current treatment strategies aim to reduce intraocular pressure and reopen the angle.

Purpose of the Study:

  • To review current surgical treatment options for primary angle-closure glaucoma.
  • To discuss the efficacy and considerations of various surgical interventions.
  • To explore the role of combined cataract extraction in PACG management.

Main Methods:

  • Review of existing literature on surgical treatments for PACG.
  • Discussion of procedures including laser peripheral iridotomy, argon laser peripheral iridoplasty, goniosynechialysis (GSL), phacoemulsification, and glaucoma implants.
  • Analysis of the pros and cons of each surgical approach.

Main Results:

  • No single surgical treatment is universally agreed upon as the best for PACG.
  • Trabeculectomy, GSL, glaucoma implants, and cyclodestructive procedures are effective options.
  • Cataract extraction, with or without significant visual impact, shows effectiveness in PACG treatment, often combined with other procedures for enhanced pressure control.

Conclusions:

  • Surgical management of PACG involves a range of options with distinct advantages and disadvantages.
  • Combined cataract extraction with procedures like trabeculectomy or GSL may improve intraocular pressure control.
  • Glaucoma implants and cyclodestruction are typically reserved for refractory cases after initial surgical failures.