Efficacy of a premedication with melatonin during cataract surgery under peribulbar block: a prospective randomized double-blinded study.

The administration of melatonin as a premedication for scheduled cataract surgery will allow a better quality of intraoperative sedationanalgesia, a reduction in the doses consumed of midazolam and alfentanyl, improves surgical conditions, leads to a decrease in ocular tone, and optimizes surgical safety conditions for the patient.