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Related Experiment Videos

Intra-ocular pressure during retrobulbar injection.

D G Lampard, D L Morgan

    Australian Veterinary Journal
    |October 1, 1977
    PubMed
    Summary

    Retrobulbar injections can temporarily increase intra-ocular pressure. This rise can be minimized by using local anesthetic and injecting slowly in small, incremental doses.

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    Area of Science:

    • Ophthalmology
    • Anesthesiology

    Background:

    • Retrobulbar injections are common procedures.
    • Transient increases in intra-ocular pressure (IOP) are a known risk.

    Purpose of the Study:

    • To investigate methods for reducing IOP spikes during retrobulbar injections.
    • To assess the impact of injection technique on IOP and anterior chamber volume.

    Main Methods:

    • Utilized local anesthetic in injected saline.
    • Employed a slow, stepwise injection technique (0.2-0.3 mL/kg at 1-minute intervals, max 10 steps).
    • Monitored intra-ocular pressure and anterior chamber volume post-injection.

    Main Results:

    • Local anesthetic and stepwise injection significantly reduced transient IOP elevations.
    • Intra-ocular pressure returned to near-normal levels within minutes after moderate injections.
    • A slight decrease in anterior chamber volume was observed post-injection.

    Conclusions:

    • The described method effectively mitigates IOP spikes associated with retrobulbar injections.
    • This technique enhances patient safety during retrobulbar anesthesia.
    • Careful injection protocols are crucial for managing IOP during ophthalmic procedures.

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