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Updated: Aug 20, 2026

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Published on: May 23, 2025
Peribulbar anesthesia: a percutaneous single injection technique with a small volume of anesthetic
Leonardo Rizzo1, Maurizio Marini, Chiara Rosati
1*Department of Critical Care Medicine and Surgery, Section of Anesthesiology, †Department of Epidemiology, ‡Department of Oto-Neuro-Ophthalmological Surgery, Section of Ophthalmology, §Department of Pathologic Anatomy, University of Florence, Florence, Italy.
Abstract:
We evaluated the efficacy and safety of a single injection technique with a small volume of anesthetic for ocular peribulbar anesthesia. We included 857 patients undergoing various ophthalmic procedures. Anesthesia consisted of a medial percutaneous injection of 5-6.5 mL of 2% lidocaine. At 2 min 85.6% of the patients had a motor block of at least 50% and at 5 min 78.6% had a motor block >80%. After 5 min 100% of the patients had adequate surgical anesthesia. There were no serious block-related complications. The described technique is a simple and satisfactory alternative to the classical techniques.
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