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Acquired strabismus surgical correction may lead to stereopsis
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The surgical correction of acquired strabismus is associated with recovery of stereopsis, according to a study. An after-surgery correction of orthotropia or intermittent orthotropia supports better stereoacuity than a larger residual angle of strabismus subtending up to 8 prism diopters of deviation, the study authors added.
Sherry L. Fawcett, PhD, and colleagues at the Retina Foundation of the Southwest prospectively studied 23 patients between 14 and 85 years old who had acquired strabismus. Random dot stereoacuity was quantified using numerous tests.
Successful eye alignment resulted in 96% of the patients achieving a measurable stereoacuity. Better median stereoacuity was achieved in patients with 12 months of constant strabismus, a presurgical capacity for fine to moderate stereopsis, a presurgical capacity for macular fusion and postsurgical orthotropia or intermittent orthotropia.
The study is published in the December issue of American Journal of Ophthalmology.