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Muscle imaging helpful for complex strabismus
LOS ANGELES — Imaging of extraocular muscles can be a valuable adjunct in the clinical evaluation of complex strabismus, according to a study.
Over the course of 12 years, 62 orthotropic volunteers and 261 patients with strabismus underwent orbital imaging under a prospective protocol here at the Jules Stein Eye Institute. Magnetic resonance imaging (MRI) was performed in 267 subjects, and computed x-ray tomography in 56. In patients with strabismus, extraocular muscle size was commonly abnormal in comparison with normal orbits. Abnormalities included absence or atrophy of the superior oblique in superior oblique palsy, abnormalities of the trochlea or superior oblique tendon in Brown’s syndrome, heterotopy of the rectus pulleys associated with incomitant strabismus, trauma to rectus extraocular muscles, atrophy of the lateral rectus and extraocular muscle disinserted by scleral buckle.
The study is published in the December issue of Journal of AAPOS.