Nalbuphine as an Adjuvant to Local Anaesthetic Mixture in Peribulbar Cataract Surgery

"Both groups received 8 ml solution for the peribulbar block, Patients of group N was received a mixture of 3 ml of 2% lidocaine, 4 ml of 0.5% bupivacaine with hyaluronidase (75IU)(16) and 4mg of nalbuphine in 1 ml normal saline. Patients of group C was received a mixture of 3 ml of 2% lidocaine, 4 ml of 0.5% bupivacaine with hyaluronidase (75 IU) and 1 ml normal saline. Nalbuphine (20mg amp.) was prepared in 0.9% sodium chloride in 5mL syringe.~If the block was inadequate after 10 minutes, a 2-4 ml supplementation of local anesthetics was given by the same technique and the patient was excluded from the study.~After adequate analgesia (loss of sensation to touch by a small cotton wool) and akinesia, the surgeon was allowed to start the surgery"

lidocaine, 0.5% bupivacaine, 1 ml hyaluronidase (75 IU) and 1 ml saline (total 8 ml).

2% lidocaine, 4 ml of 0.5% bupivacaine with hyaluronidase (75IU)