Comparison of 2% lidocaine and 0.5% bupivacaine with 2% lidocaine and 0.75% ropivacaine in peribulbar block for cataract surgery

Purpose: To compare the efficacy of 2% lidocaine and 0.5% bupivacaine with 2% lidocaine and 0.75% ropivacaine in peribulbar block for cataract surgery. To compare the duration for onset of sensory and motor blockade between the two groups. To find out the postoperative analgesia provided by 0.5% bupivacaine and 0.75% ropivacaine. Methods: A total of 80 patients were included in the study. After obtaining informed and written consent from patient, we randomized patients into two groups. Group B received 5 mL (1:1 mixture) of 0.5% Bupivacaine (ANAWIN 0.5%, NEON LABORATORIES LTD), 2% Lidocaine (XYLOCAINE ® 2%, AKUMS DRUGS and PHARMACEUTICALS LTD), 1500IU of Hyaluronidase (HYNIDASE, SHREYAS LIFE SCIENCES PVT LTD) while group R received 5 mL (1:1 mixture) 0.75% Ropivacaine (ROPIN 0.75%, NEON LABORATORIES LTD), 2% lidocaine, 1500IU of Hyaluronidase. Results: In this study of 80 patients undergoing small incision cataract surgery, Group B received a bupivacaine-lidocaine-hyaluronidase mixture, while Group R received a ropivacaine-lidocaine-hyaluronidase mixture for peribulbar block. Ropivacaine showed statistically significant advantages in faster motor block onset, lower IOP after 10 min, and longer analgesia duration, with no difference in sensory block onset. Thus, ropivacaine appears to be a safer and effective alternative to bupivacaine in peribulbar anesthesia for cataract surgery. Conclusion: The analysis showed that 0.75% Ropivacaine recorded an earlier onset of motor block, low IO P value post block, and longer duration of analgesia than 0.5% Bupivacaine that was statistically significant. Hence, Ropivacaine can be used as a safer alternative for Bupivacaine in peribulbar block for cataract Surgery.