Tehran University of Medical Sciences Acta Medica Iranica 0044-6025 32 1-2 1994 06 15 30 34 Iraj Ahadzadegan 2015 09 28 This article presents a new technique for weakening the superior oblique muscle by lengthening it's tendon. Lengthening is accomplished by a nasal superior oblique tenotomy, and by inserting a segment of silicone band 240 between the cut ends of the tendon. This technique is useful for the treatment of Brown syndrome and cases with superior oblique overaction. https://acta.tums.ac.ir/index.php/acta/article/view/235 https://acta.tums.ac.ir/index.php/acta/article/download/235/231