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Laser iridotomy in closed-angle glaucoma.

Y Yassur, S Melamed, S Cohen

    Archives of Ophthalmology (Chicago, Ill. : 1960)
    |October 1, 1979
    PubMed
    Summary
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    Argon laser iridotomy effectively treats acute angle-closure glaucoma and serves as a beneficial preventive measure. This outpatient procedure is simple, safe, and maintains normal intraocular pressure in most patients.

    Area of Science:

    • Ophthalmology
    • Laser Surgery

    Background:

    • Closed-angle glaucoma is a condition that can lead to vision loss.
    • Laser iridotomy is a potential treatment for various forms of angle-closure glaucoma.

    Purpose of the Study:

    • To evaluate the efficacy and safety of argon laser iridotomy in patients with closed-angle glaucoma.
    • To assess the impact of iridotomy on intraocular pressure (IOP) in different subtypes of angle-closure glaucoma.

    Main Methods:

    • Argon laser iridotomy was performed on 53 eyes of 34 patients.
    • High energy (2 W) and short exposure times (0.01–0.04 s) were used to minimize thermal damage.
    • Patients were categorized into those with narrow angles, acute angle-closure glaucoma, and chronic closed-angle glaucoma.

    Main Results:

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    • All iridotomies were technically successful; blue irides were more resistant than brown irides.
    • Preventive iridotomy in narrow angles resulted in normal IOP for all eyes.
    • 17 out of 20 eyes with acute angle-closure glaucoma maintained normal IOP post-procedure.
    • Eyes with chronic closed-angle glaucoma showed no significant IOP change or angle improvement.

    Conclusions:

    • Argon laser iridotomy is highly recommended for acute angle-closure glaucoma and as a preventive measure.
    • The procedure is simple, can be done in an outpatient setting, and has minimal complications.
    • This technique is particularly beneficial for preventing IOP elevation in narrow-angle and acute cases.