Sub-Tenon injection

Sub-Tenon injection is an ocular route of drug administration. It involves administration of a medication to the area between the sclera and the Tenon capsule.[1]

Schematic diagram of the human eye showing.

Posterior sub-Tenons steroid injections (PSTSI) is used in the treatment of posterior ocular inflammation, such as chronic uveitis.[2] This route is also reported to be used to administer triamcinolone acetonide (a corticosteroid) in the treatment of macular telangiectasia type 1.

Also, it is used in the ocular anesthesia.[3]

References
  1. Calenda, Emile; Olle, Priscille; Muraine, Marc; Brasseur, Gérard (2000). "Peribulbar anesthesia and sub‐Tenon injection for vitreoretinal surgery: 300 cases". Acta Ophthalmologica Scandinavica. 78 (2): 196–199. doi:10.1034/j.1600-0420.2000.078002196.x. PMID 10794256.
  2. Posterior sub-Tenon's Steroid Injections for the Treatment of Posterior Ocular Inflammation: Indications, Efficacy and Side Effects
  3. Sub-Tenon anaesthesia, Eye Wiki.
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