purpose : to evaluate the results of anterior and nasal transposition (ant) of the inferior oblique muscle (io) in patients with the io muscle overaction methods : this retrospective case series included patients with io muscles overaction, in whom ant of the io muscle was performed. in patient with simultaneous horizontal deviation, horizontal strabismus surgery was also performed. they were e...

PURPOSE To evaluate the efficacy of transposition of the belly of the inferior oblique muscle in treating inferior oblique overaction with small angle hypertropia. METHODS The medical records of 10 patients who underwent inferior oblique belly transposition from March 2014 to July 2016 were reviewed. Transposition of the inferior oblique muscle belly consisted of suturing the entire body of t...

A case of acute esotropia with bilateral inferior oblique muscle overaction in a 4-year-old boy with a posterior fossa pilocytic astrocytoma is reported. After tumor excision, the esotropia and oblique dysfunction resolved. Acute esotropia with bilateral inferior oblique muscle overaction without abducens palsy is an unusual sign of brain stem mass.

purpose: to determine the effect of recession and myectomy on inferior oblique overaction (iooa). method: this study was performed on 50 patients (82 eyes) scheduled for iooa surgery who were randomly divided into two groups: recession (r) versus myectomy (m). a complete eye examination was performed before the operation. io was cut off at its inferior temporal region when using m procedure. in...

purpose: to determine the anatomical location of the inferior oblique (io) muscle and any possible correlation between io overaction and io muscle mass. methods: in this interventional case series, eyes undergoing primary surgery for io overaction underwent measurement of the distance between io muscle borders from the limbus as well as muscle belly circumference, intraoperatively. results: ove...

AIM To investigate changes in fundus excyclotorsion after inferior oblique myectomy or myotomy. METHODS The records of 21 patients undergoing strabismus surgery by a single surgeon between 2009 and 2012 were examined. Only patients who had undergone an inferior oblique myectomy or myotomy, with or without horizontal rectus muscle surgery, were evaluated. Digital fundus photographs were obtain...

BACKGROUND/AIMS Among the various weakening techniques of inferior oblique muscle overaction, the most commonly used techniques include myectomy, recession, and anterior transposition. Anterior transposition and myectomy were compared to evaluate the surgical results in inferior oblique overaction. METHODS 20 children with bilateral +3 overacting inferior oblique muscles underwent a prospecti...

BACKGROUND Sensorimotor and orbital anatomical mechanisms have been invoked to explain primary oblique muscle overaction. METHODS Review of primitive visuo-vestibular reflexes and neuroanatomical pathways corresponding to vestibulo-ocular reflexes, and correlation with known clinical abnormalities in patients with primary oblique muscle overaction. RESULTS Bilateral superior oblique muscle ...

Dr. Nelson has no financial or proprietary interest in the materials presented herein. doi:10.3928/01913913-20171212-01 The treatment of small angle hypertropia in the primary position with inferior oblique overaction is often a dilemma for pediatric ophthalmologists. Some patients have a face turn and diplopia in the primary position as well as in side gaze. Prisms are often unsatisfactory bec...

Biopsy material from primary and secondary overacting inferior oblique muscles were examined by light and electron microscopy. Most muscle fibres were in different stages of atrophy. A high variation of alterations was encountered in all muscles. The most striking abnormalities were huge accumulations of mitochondria and muscle vacuolisation related mainly to the enlargement of the tubules of s...