A Comparative study on efficacy of combination of 0.5 percentage Ropivacaine and 2 percentage lidocaine versus combination of 0.5 percentage Bupivacaine and 2 percentage lidocaine for peribulbar anaesthesia in cataract surgery

This is a prospective, randomized, double blinded study to compare the effectiveness of  block characteristics and side effect profile of a mixture of 0.5% Ropivacaine and 2% Lidocaine with a mixture of 0.5% Bupivacaine and 2% Lidocaine for peribulbar block in cataract surgery.

The primary objective of the study is to evaluate the peribulbar block efficacy by assessing the onset of block and total duration of sensory and motor block. The secondary objective is to assess the adverse reactions and immediate systemic complications associated with the medication, to know the patient and surgeon satisfaction with the analgesia and anaesthetic technique.  By doing this study, if we establish that efficacy of Ropivacaine is on par with Bupivacaine with better side effect profile, we can implement regular usage of Ropivacaine for peribulbar anesthesia in cataract. Many patients posted for cataract surgery are elderly people with multiple systemic diseases. Through this study, if this novel anesthetic medication, Ropivacaine is proved to have better efficacy and safety profile, it can replace the usage of the traditional anesthetic medication which is associated with cardiovascular and neurological adverse effects.