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Surgical protocol can correct eyes with 'highly myopic strabismus'
Am J Ophthalmol. 2009;149(2):341-346.
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A surgical procedure in which the muscles bellies of the superior and lateral rectus are united is effective for correcting globe dislocation in eyes with strabismus and axial high myopia, according to a study.
In the study, researchers proposed the term "highly myopic strabismus" to identify patients with axial high myopia and restrictive ocular motility that can manifest in severity as minimal restriction in abduction to strabismus fixus, and with esotropic, exotropic or hypotropic fixation.
In patients with highly myopic strabismus, a surgical protocol that joins the muscle bellies of the superior and lateral rectus can help restore the dislocated globe back into the muscle cone, according to the study. The surgery improved the mean angle of dislocation of the globe in 23 eyes of 14 patients from 184° before surgery to 100.1° after surgery, the mean maximum angle of abduction from –14° to 46.3°, the mean maximum angle of sursumduction from –10.8° to 38.5° and the mean angle of deviation from 58.8° to 0.7°.
In four of 23 eyes, uniting the superior and lateral rectus alone was sufficient for restoring ocular motility, while in the remaining eyes, recession of the medial rectus was necessary to remove mechanical restriction, according to the study.