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Medial canthus single-injection peribulbar anesthesia: a prospective randomized comparison with classic
Stéphane Deruddre1, Dan Benhamou
1Department of Anesthesiology and Intensive Care Medicine, CHU de Bicêtre, Le Kremlin-Bicetre, France.
Background And Objectives:
The authors report the first prospective randomized comparison of the medial canthus single-injection peribulbar anesthesia (also called caruncular anesthesia) with the classic double-injection peribulbar technique.
Methods:
One hundred patients scheduled for cataract surgery were randomly assigned to either a single medial canthus injection or a double peribulbar injection of mepivacaine 2%. The amount of anesthetic agent injected was clinically adapted to each patient. Akinesia, volume injected, pain, reinjections, and complications were assessed after the procedure.
Results:
The medial canthus single-injection peribulbar anesthesia was significantly less painful and required less anesthetic agent than the double-injection peribulbar anesthesia. Akinesia score and the reinjection rate were similar in the 2 groups, whereas chemosis was significantly more frequent in the double-injection group.
Conclusions:
Medial canthus single-injection peribulbar anesthesia appears to be an effective alternative to the usual double-injection peribulbar anesthesia.
