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Lens extraction for chronic angle-closure glaucoma.

D S Friedman1, S S Vedula

  • 1Wilmer Eye Institute / Johns Hopkins University, Ophthalmology Department, 600 North Wolfe Street, Wilmer 120, Baltimore, MD 21287, USA. david.friedman@jhu.edu

The Cochrane Database of Systematic Reviews
|July 21, 2006
PubMed
Summary
This summary is machine-generated.

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Lens extraction lacks evidence for chronic primary angle-closure glaucoma treatment. High-quality studies are needed to compare its effectiveness against other interventions for this eye condition.

Area of Science:

  • Ophthalmology
  • Glaucoma Research
  • Surgical Interventions

Background:

  • Angle-closure glaucoma involves obstructed aqueous humor outflow, leading to increased intraocular pressure.
  • Mechanisms include anatomical predisposition and pathophysiologic processes, with relative pupillary block being most common.
  • Angle crowding, often coexisting with pupillary block, can result from lens changes or displacement.

Purpose of the Study:

  • To assess the effectiveness of lens extraction for chronic primary angle-closure glaucoma.
  • To compare lens extraction with alternative treatments in patients without prior acute angle-closure attacks.

Main Methods:

  • Searched CENTRAL, MEDLINE, EMBASE, and LILACS databases.
  • Included non-randomized comparative studies due to absence of randomized trials.

Related Experiment Videos

  • Excluded case-series studies; data extraction focused on quality, outcomes, and characteristics.

    • Main Results:

    • No randomized trials were found evaluating lens extraction for chronic primary angle-closure glaucoma.
    • Included non-randomized studies had methodological flaws, including selection bias.
    • Evidence from available studies does not prove effectiveness or compare lens extraction to other treatments.

    Conclusions:

    • Current evidence from high-quality randomized or non-randomized studies on the effectiveness of lens extraction for chronic primary angle-closure glaucoma is lacking.