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Limbal sub-Tenon's administration of retrobulbar anesthesia using a blunt irrigating cannula
L Bergman1, L Berglin, P V Algvere
1Department of Opthalmology, Karolinska Institute, St. Erik's Eye Hospital, Stockholm, Sweden.
Background And Objective:
To eliminate sharp needles when administering local anesthesia to the eye in order to reduce serious complications caused by needle perforation.
Patients And Methods:
After topical anesthesia, limbal conjunctival incision, and sub-Tenon's dissection, a retrobulbar irrigation of an equal mixture of bupivacaine (5 mg/ml) and lidocaine (20 mg/ml) was given using a blunt cannula.
Results:
The technique was used in both vitreoretinal surgery (n = 70) and anterior segment surgery (n = 235) with good analgesic and akinetic effects. No serious adverse were noted.
Conclusion:
This proved to be a safe and efficient technique that abandoned the use of sharp needles.