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Clinical Trial Summary

To compare the efficacy and efficiency of peribulbar block versus sub-Tenon's capsule injection of local anesthetic in redo vitreoretinal surgery


Clinical Trial Description

Sixty patients undergoing vitreoretinal surgery were randomized to receive either peribulbar or sub-Tenon's capsule injection of 8 ml of a 20:80 mixture of 2% lidocaine and 0.5% bupivacaine with 60 IU hyalouronic acid. The primary outcome measured was intraoperative eye pain, which was rated by patients in both groups using an 11-point (0-10) numerical visual analogue scale immediately after. The surgeons indicated whether they perceived patient discomfort during 4 different stages of the operation: opening of the conjunctiva, vitrectomy (if performed), placement of scleral buckle (if performed) or using the laser probe, and closing of the conjunctiva. The need for supplemental local anesthesia, and use of IV sedation for additional pain control intraoperatively were compared between the two groups. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT04978415
Study type Interventional
Source Research Institute of Ophthalmology, Egypt
Contact Abeer Samir, MD
Phone 01125666006
Email abeersamirali@gmail.com
Status Recruiting
Phase N/A
Start date October 1, 2021
Completion date November 30, 2022

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