A midline experimental lesion separating the medial longitudinal fasciculi at and below the level of the abducens nuclei without damaging either fasciculus at the level of the nuclei has produced defects of ocular motility resembling those of clinical internuclear ophthalmoplegia. Electromyographic recordings during lateral gaze demonstrate: (1) lack of inhibition of the lateral rectus muscle i...

Purpose: A silicone band was sutured anteriorly to the edge of the lateral rectus muscle neotendon during recession surgery in order to reduce and delay the reoccurrence after exotropia surgery. Methods: Collected data of 12 patients (8 males and 4 females), aged 7 54 years with diagnosis of constant manifest exotropia and mean angle deviation in primary position of 15,04 ̊ (sd 1,18) for near an...

Purpose To investigate changes in volumes of extraocular muscle (EOM) compartments in unilateral superior oblique (SO) palsy using magnetic resonance imaging (MRI). Methods High-resolution, surface-coil MRI was obtained in 19 patients with unilateral SO palsy and 19 age-matched orthotropic control subjects. Rectus EOMs and the SO were divided into two anatomic compartments for volume analysis...

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 compare and evaluate the efficacy of two different surgical techniques for the treatment of near-distance disparity esotropia; combined resection-recession and recession-retroequatorial myopexy of medial rectus muscles. PATIENTS AND METHODS This prospective study included 28 patients diagnosed with convergence excess esotropia who had worn their full cycloplegic refraction and/or b...

of elevation, fixation was eccentric, and there were nystagmoid movements in this eye. There was slight ptosis, the left interpalpebral fissure being 9 mm. at its highest point and the right 10 mm. The action of the levator palpebrae superioris was good. There was marked secondary contracture of the inferior rectus muscle. Operative intervention was carried out in two stages with a five-week in...

Convergence excess esotropia has been treated with bifocals, miotics, medial rectus recession(s), fadenoperation, or a combination of these. However, comparatively few studies on the sensory status of these patients exist. We present the sensory findings in 31 children treated surgically. Twenty-one had fadenoperations combined with bimedial rectus recessions, one had a fadenoperation alone, an...

Purpose The goal of this study was to determine if continuous application of insulin-like growth factor-1 (IGF-1) could improve eye alignment of adult strabismic nonhuman primates and to assess possible mechanisms of effect. Methods A continuous release pellet of IGF-1 was placed on one medial rectus muscle in two adult nonhuman primates (M1, M2) rendered exotropic by the alternating monocula...

A 66-year-old female presented with exotropia and hypertropia of her left eye. She had a previous history of lateral rectus recession and medial rectus resection of her left eye 20 years prior to old oculomotor and trochlear nerve pareses. She was treated with a botulinum toxin injection in the inferior oblique and lateral rectus muscles of her affected eye. In this case, the patient’s exotropi...