Dear Editor, Anterior transposition of the inferior oblique (IO) muscle is an effective treatment for dissociative vertical deviation (DVD) when associated with IO muscle overaction [1]. By transposing the insertion of the IO muscle anterior to the equator, a force vector of the IO muscle converts from elevation to depression, which in turn reduces DVD [1]. After the procedure, the superior rec...

PURPOSE To report a case of bilateral Brown's syndrome with unilateral spontaneous resolution causing hypertropia and significant head tilt. CASE REPORT A 3 ½-year-old girl presented with bilateral typical Brown's syndrome and orthophoria in the primary position; she presented with unilateral resolution of right Brown's syndrome 6 months later, causing right hypertropia and gradually deterior...

BACKGROUND The differential diagnosis between fully and partially refractive accommodative esotropia (Ac-ET) depends on outcomes after intervention with refraction correction. Whether the differences exist in terms of initial clinical features between these two variants has not been fully explored. METHODS Children between the ages of 6 months and 8 years with esotropia and spherical equivale...

The superior oblique tendon sheath syndrome was first described by Brown (I950). The essential feature is a limitation of elevation in adduction caused by a short or inadequately mobile anterior segment of the superior oblique tendon and its sheath. Treatment of the condition is indicated if an abnormal head posture is necessary in order to maintain an adequate field of binocular single vision;...

PURPOSE Residual head tilt has been reported in patients with superior oblique muscle palsy (SOP) after surgery to weaken the inferior oblique (IO) muscle. The treatments for these patients have not received appropriate attention. In this study, we evaluated the superior rectus (SR) muscle recession as a surgical treatment. METHODS The medical records of 12 patients with SOP were retrospectiv...

PURPOSE To report masked superior oblique muscle tightness as a possible mechanism causing A-pattern exotropia with intorsion after inferior rectus muscle recession in the context of thyroid eye disease. METHODS Three patients with thyroid eye disease and involvement of the superior oblique muscle are presented, along with a fourth comparison case without superior oblique muscle involvement. ...