Harada-Ito procedure

A surgical technique used to treat torsional diplopia and excyclotorsion resulting from superior oblique palsy where the superior oblique tendon is divided lengthwise into anterior and posterior halves. The anterior one-third of the tendon fibers are disinserted and transposed anterolaterally to be sutured near the superior border of the lateral rectus muscle insertion. This enhances the incyclotorsional effect of the superior oblique to correct the excyclotorsion, without affecting the vertical position.