Rectus Pulley Displacements without Abnormal Oblique Contractility Explain Strabismus in Superior Oblique Palsy
نویسندگان
چکیده
منابع مشابه
Displacement of the medial rectus pulley in superior oblique palsy.
PURPOSE The rectus extraocular muscles pass through fibromuscular connective tissue pulleys that stabilize muscle paths and control the direction of muscle pull. The authors investigated whether abnormal forces associated with superior oblique palsy can cause displacement of pulleys and muscle paths. METHODS Coronal magnetic resonance imaging (MRI) showing significantly reduced superior obliq...
متن کاملEnhanced vertical rectus contractility by magnetic resonance imaging in superior oblique palsy.
OBJECTIVE To seek evidence for causative secondary changes in extraocular muscle volume, cross-sectional area, and contractility in superior oblique (SO) palsy using magnetic resonance imaging, given that vertical deviations in SO palsy greatly exceed those explained by loss of SO vertical action alone. METHODS High-resolution, quasi-coronal orbital magnetic resonance images in target-control...
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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...
متن کاملInferior oblique muscle anteriorization in congenital superior oblique palsy.
BACKGROUND Inferior oblique muscle overaction of variable amounts is usually present with congenital superior oblique palsy. Inferior oblique muscle anteriorization has been described as a suitable surgical procedure in this entity. The aim of this study was to investigate the effect of inferior oblique muscle anteriorization in patients with congenital superior oblique palsy on vertical, torsi...
متن کاملVertical saccades in superior oblique palsy.
Vertical saccadic velocities in 10 patients who had unilateral superior oblique muscle palsy and 14 normal subjects were measured with the magnetic scleral search coil. The authors sought to determine whether downward saccades in patients who had superior oblique palsy are slow. Peak velocities of 10 degrees and 20 degrees saccades performed in the superior and inferior fields of the orbit, and...
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ژورنال
عنوان ژورنال: Ophthalmology
سال: 2016
ISSN: 0161-6420
DOI: 10.1016/j.ophtha.2016.02.016