alexa Tenon recession: a novel adjunct to improve outcome in the treatment of large-angle strabismus in thyroid eye disease.
Diabetes & Endocrinology

Diabetes & Endocrinology

Journal of Thyroid Disorders & Therapy

Author(s): Zoumalan CI, Lelli GJ Jr, Kazim M

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Abstract PURPOSE: Treatment of large-angle strabismus in thyroid eye disease has historically suffered from low success rates. The authors report a novel technique that adds Tenon recession without conjunctival recession to standard extraocular muscle surgery. METHODS: Twenty-six patients with thyroid eye disease-associated strabismus with preoperative deviations of ≥ 25 prism diopters in horizontal or vertical deviations underwent strabismus surgery. The amount of recession for a given muscle was determined by a combined analysis of the preoperative versions, deviation in primary gaze and in gaze opposite the restricted muscle, and intraoperative forced duction testing. Before conjunctival closure, the underlying Tenon layer and associated orbital tissues were recessed and allowed to retract posteriorally. The overlying conjunctiva was subsequently reapproximated to its anatomic position without tension. RESULTS: The average preoperative measurements for horizontal and vertical deviations were 39.2 ± 13.4 and 45.0 ± 18.9 prism diopters, respectively. Average postoperative measurements for horizontal and vertical deviations were 3.2 ± 6.0 and 11.1 ± 11.9 prism diopters, respectively. Overall, 22 of 26 patients (84.6\%) were within 10 prism diopters of intended correction postoperatively and achieved binocular fusion with or without the use of prisms for both distance and near vision. Four had residual deviations that required reoperation, all of which successfully produced binocular vision without the use of prisms. CONCLUSIONS: In the authors' experience, Tenon recession improves outcomes in surgery for large-angle strabismus in thyroid eye disease. This article was published in Ophthal Plast Reconstr Surg and referenced in Journal of Thyroid Disorders & Therapy

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