Sub-Tenon’s anaesthesia for modern eye surgery—clinicians’ perspective, 30 years after re-introduction

Chua, Matthew J.; Lersch, Friedrich; Chua, Alfred W. Y.; Kumar, Chandra M.; Eke, Tom (2021). Sub-Tenon’s anaesthesia for modern eye surgery—clinicians’ perspective, 30 years after re-introduction. Eye, 35(5), pp. 1295-1304. Springer Nature 10.1038/s41433-021-01412-5

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Sub-Tenon's block (STB) is a good technique of local anaesthesia for many types of eye surgery. It has a relatively good risk profile, in that sight- and life-threatening complications appear to be extremely rare. STB has gained popularity in the last three decades, with refinements including different types of blunt metal cannula, plastic cannulae and 'incisionless' approaches. Usage of STB varies significantly across the globe. This narrative review documents the historical evolution of STB techniques, anatomical and physiological considerations, its utility and suitability, complications, explores the current practice and possible future applications.

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