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Related Experiment Videos

Provocative tests in closed-angle glaucoma.

R Mapstone

    The British Journal of Ophthalmology
    |February 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

    This study developed a method to provoke closed-angle glaucoma in at-risk eyes. The provocation scheme successfully identified eyes that developed glaucoma, aiding in early detection and management.

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    Area of Science:

    • Ophthalmology
    • Glaucoma Research
    • Clinical Trials

    Background:

    • Closed-angle glaucoma is a serious condition requiring early detection.
    • Identifying individuals at risk is crucial for preventing vision loss.
    • Current diagnostic methods may not fully capture all at-risk individuals.

    Purpose of the Study:

    • To develop and evaluate a novel provocation scheme for identifying eyes at risk of closed-angle glaucoma.
    • To assess the efficacy of specific pharmacological agents in provoking angle closure.
    • To establish a reliable method for diagnosing latent or subclinical angle-closure glaucoma.

    Main Methods:

    • 119 eyes at risk were provoked using pilocarpine and phenylephrine.
    • Eyes that did not develop angle closure were re-provoked with tropicamide.
    • A control group of 36 eyes with negative provocation tests was observed long-term.

    Main Results:

    • 74 out of 119 eyes developed closed-angle glaucoma after initial provocation.
    • An additional 9 eyes developed closed-angle glaucoma after re-provocation with tropicamide.
    • Only 1 eye in the 36-eye negative control group developed closed-angle glaucoma over a mean 3-year follow-up.

    Conclusions:

    • The described provocation scheme is effective in identifying eyes at risk of developing closed-angle glaucoma.
    • Pharmacological provocation with pilocarpine, phenylephrine, and tropicamide can reveal latent angle closure.
    • This method offers a valuable tool for early diagnosis and intervention in glaucoma management.