Comparison Between Single Injection Technique for Percutaneous Inferomedial and Medial Canthus Episcleral Anesthesia Using a Short Fine Needle (27G-12.5mm) in Cataract Surgery
ESRA Academy. Sami R. Sep 8, 2016; 138617; 0503 Topic: Local anaesthesia
Assoc. Prof. Rehab Sami
Assoc. Prof. Rehab Sami

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Background and Aims:

Comparing the efficacy and safety of single injection using a short, fine needle (27G,12mm) in the medial canthus and infero-medial sites to produce optimal operating conditions for cataract surgery.


After obtaining approval of the Ethical Committee of the Institute, this comparative study included 108 patients allocated in two groups (54 patients each). Single percutaneous peribulbar injection was performed using a short fine needle (27G,12mm) in the medial canthus site in the first group and in the infero-medial site in the second group. Surgical akinesia was assessed as a primary end point while analgesia, incidence of complications as well as patient and surgeon satisfaction were assessed as secondary end point.


Both sites provided comparable akinesia. An equal number of patients required supplementary injection in both groups. However, the total volume of the local anesthetic injected was less in the infero-medial group. There were no serious complications in the two groups. 


Single injection peribulbar technique at both entry sites (medial canthus and infero-medial) using a short fine needle (27G,12mm) proved to be a safe and efficient technique that offers excellent anesthesia and akinesia with less complications for cataract surgery.

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