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AMBULATORY ANESTHESIA

Retrobulbar Versus Systemic Application of Morphine During Titratable Regional Anesthesia via Retrobulbar Catheter in Intraocular Surgery

Thomas M. Hemmerling, MD, DEAA^*, Wido M. Budde, MD, Wolfgang Koppert, MD^*, and Jost B. Jonas, MD

Departments of *Anesthesiology and Ophthalmology and Eye Hospital, University of Erlangen-Nuremberg, Germany

Address correspondence and reprint requests to Dr. T. M. Hemmerling, Department of Anesthesiology, University of Erlangen-Nuremberg, Krankenhausstr. 12, D-91054 Erlangen, Germany. Address e-mail to thomashemmerling{at}hotmail.com

Implications: We investigated the effects of morphine on postoperative pain in patients undergoing intraocular surgery using a new indwelling catheter. Although morphine produced central analgesic effects, there was no evidence for the involvement of peripheral opioid receptors in the modulation of ocular pain.