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

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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.

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Acknowledgements

The authors would like to thank Dr. Cagatay Buyukustun for assistance with statistical analysis.

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Authors do not have proprietary interest, and any financial support or grant has been received.

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Correspondence to Atilla Alpay.

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Ethics approval for the study was obtained from the Bülent Ecevit Universty’s Ethics Committee.

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Alpay, A., Güney, T. Evaluating the effectiveness of localized sub-Tenon’s anesthesia in 23-gauge vitreoretinal surgery. Int Ophthalmol 41, 195–201 (2021). https://doi.org/10.1007/s10792-020-01566-3

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