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Related Experiment Videos

Acute pressure elevation following panretinal photocoagulation

P Blondeau, P R Pavan, C D Phelps

    Archives of Ophthalmology (Chicago, Ill. : 1960)
    |July 1, 1981
    PubMed
    Summary

    Argon laser panretinal photocoagulation for diabetic retinopathy frequently elevates intraocular pressure. This pressure rise, often temporary, can occur with open or closed anterior chamber angles, impacting aqueous outflow.

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    Area of Science:

    • Ophthalmology
    • Retinal Diseases
    • Surgical Interventions

    Background:

    • Diabetic retinopathy is a leading cause of vision loss.
    • Argon laser panretinal photocoagulation is a standard treatment for proliferative diabetic retinopathy.
    • Understanding treatment-related complications like intraocular pressure changes is crucial.

    Purpose of the Study:

    • To investigate the incidence and characteristics of intraocular pressure elevation following argon laser panretinal photocoagulation in diabetic retinopathy patients.
    • To determine the mechanisms and duration of pressure changes.
    • To assess the impact on anterior chamber angles and outflow facility.

    Main Methods:

    • Retrospective analysis of 18 eyes treated with argon laser panretinal photocoagulation for diabetic retinopathy.

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  • Monitoring of intraocular pressure, anterior chamber angle status, and outflow facility before and after treatment.
  • Evaluation of pressure changes over time.

    • Main Results:

    • 17 of 18 eyes experienced increased intraocular pressure post-treatment.
    • Pressure elevation averaged 10 mm Hg, was detected shortly after treatment, and persisted for hours.
    • Reduced outflow facility was commonly observed; angle closure developed in some eyes.

    Conclusions:

    • Argon laser panretinal photocoagulation frequently causes significant intraocular pressure elevation in diabetic retinopathy.
    • The initial mechanism appears to involve open-angle dynamics, with potential progression to angle closure.
    • The underlying cause of open-angle pressure rise remains unidentified.