Peribulbar versus retrobulbar anaesthesia for cataract surgery

Area of Science:

• Ophthalmology
• Anesthesiology
• Surgical Procedures

Background:

• Cataract surgery, a common procedure to restore vision, typically utilizes local anesthesia.
• Retrobulbar (RB) and peribulbar (PB) blocks are the primary regional anesthesia techniques employed.
• A debate exists regarding the comparative efficacy and safety of PB versus RB anesthesia.

Purpose of the Study:

• To compare peribulbar anesthesia (PB) with retrobulbar anesthesia (RB) for cataract surgery.
• To assess differences in pain, ocular akinesia, patient satisfaction, and complications.
• To evaluate the safety and effectiveness of these two regional anesthesia methods.

Main Methods:

• Systematic review and meta-analysis of randomized controlled trials.
• Searched multiple databases (CENTRAL, MEDLINE, EMBASE) up to March 2015.
• Included six trials with 1438 participants; data extraction and quality assessment performed.

Main Results:

• No significant difference in pain perception or complete ocular akinesia between PB and RB.
• Both anesthesia techniques were largely effective with no difference in the need for additional injections.
• Conjunctival chemosis was more frequent with PB, while lid hematoma was more common with RB; severe complications were rare.

Conclusions:

• Peribulbar and retrobulbar blocks demonstrate similar effectiveness for cataract surgery anesthesia and akinesia.
• Patient acceptability and the need for supplementary anesthesia injections were comparable between the two methods.
• Both techniques are associated with a low incidence of severe local or systemic complications.