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. 2012:5:35-46.
doi: 10.2147/LRA.S16314. Epub 2012 Jun 21.

Sub-Tenon's anesthesia: an update

Philip Guise  1
Affiliations

Sub-Tenon's anesthesia: an update

Philip Guise. Local Reg Anesth. 2012.

Abstract

Sub-Tenon's block has become the most common technique of orbital regional anesthesia in many centers. It provides effective anesthesia to the orbit with a lower incidence of sight-threatening complications than sharp needle techniques. This article will discuss the relevant anatomy, finer points of sub-Tenon's block technique, and the evidence supporting its safety.

Keywords: anesthesia local; anesthesia ophthalmic; complications; sub-Tenon’s block; techniques.

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Figures

Figure 1
Figure 1
Anatomy of Tenon’s capsule. Copyright © 1984, Williams and Wilkins. Reproduced with permission from Doxanas MT, Anderson RL. Clinical Orbital Anatomy. Baltimore: Williams and Wilkins; 1984:109.
Figure 2
Figure 2
Sub-Tenon’s block.
Figure 3
Figure 3
BD Visitec cannula (Beaver-Visitec, Waltham, MA).
Figure 4
Figure 4
Kumar-Dodds cannula. Copyright © 2001, John Wiley and Sons. Reproduced with permission from Kumar CM, Dodds C. A disposable plastic sub-Tenon cannula. Anaesthesia. 2001;56(4):399.
Figure 5
Figure 5
Greenbaum cannula. Copyright © 2000. Alcon Laboratories, Fort Worth, TX. Reproduced with permission.
Figure 6
Figure 6
Ultrashort cannula. Copyright © 2004. Elsevier. Reproduced with permission from McNeela BJ, Kumar CM. Sub-Tenon’s block with an ultrashort cannula. J Cataract Refract Surg. 2004;30(4):858–862.
See this image and copyright information in PMC

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