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Randomized Controlled Trial
. 2021 Jan;41(1):195-201.
doi: 10.1007/s10792-020-01566-3. Epub 2020 Sep 9.

Evaluating the effectiveness of localized sub-Tenon's anesthesia in 23-gauge vitreoretinal surgery

Atilla Alpay  1   2 , Tuncer Güney  3
Affiliations
Randomized Controlled Trial

Evaluating the effectiveness of localized sub-Tenon's anesthesia in 23-gauge vitreoretinal surgery

Atilla Alpay et al. Int Ophthalmol. 2021 Jan.

Abstract

Purpose: To evaluate the effectiveness of localized sub-Tenon's anesthesia for pain control during 23-gauge vitreoretinal surgery.

Methods: Eighty patients were randomly divided into two groups as localized sub-Tenon's (group 1, n = 41) and retrobulbar (group 2, n = 39) anesthesia groups. In group 1, a small volume of anesthetic was injected into the sub-Tenon's capsules at the trocar entry sites. The 23-gauge vitreoretinal surgery was performed in all patients. In both groups, the pain levels during the surgical steps were evaluated using the visual analog pain scale.

Results: Patients in group 1 experienced less pain than group 2 patients did during placement of the trocars and scleral depression (p = 0.041, p = 0.029). Pain during laser photocoagulation was higher in group 1 (p = 0.008). There was no serious complication due to anesthesia or surgery.

Conclusion: Localized sub-Tenon's anesthesia is as effective as retrobulbar anesthesia in many steps of vitreoretinal surgery for providing pain control. It can be considered an alternative form of local anesthesia.

Keywords: 23-Gauge vitrectomy; Localized anesthesia; Retrobulbar anesthesia; Sub-Tenon’s anesthesia; Vitreoretinal surgery.

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