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The purpose of the study was to compare 1% ropivacaine and hyaluronidase 75 units/ml with a 1:1 mixture of 2% lignocaine and 0.5% bupivacaine and hyaluronidase 75 units/ml for peribulbar anaesthesia in cataract surgery. We conducted a double-blind randomized trial involving 100 patients. Group 1 received a peribulbar injection of 8 ml of 1% ropivacaine and hyaluronidase 75 units/ml. Group 2 received a peribulbar injection of 8 ml of a 1:1 mixture of 2% lignocaine and 0.5% bupivacaine and hyaluronidase 75 units/ml. Parameters measured were ocular and eyelid movement scores, time suitable for surgery, need for supplementary injections, verbal pain score and complications. No statistical differences were found between the two groups regarding any of the study parameters. Both groups had excellent surgical analgesia and akinesia. We conclude that 1% ropivacaine is a suitable agent for single injection peribulbar anaesthesia for cataract surgery.

Comparison of 1% Ropivacaine and a Mixture of 2% Lignocaine and 0.5% Bupivacaine for Peribulbar Anaesthesia in Cataract Surgery