Sound Eye Versus Amblyopic Eye Surgery for Correction of Unilateral Sensory Strabismus
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- Category: Vol. 81, September 2013
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Sound Eye Versus Amblyopic Eye Surgery for Correction of Unilateral Sensory Strabismus, MOHAMED M.K. DIAB and KAMAL A.M. SOLAIMAN
Abstract
Purpose: Based on Herring's law of equal innervations to the yoke muscles, this study aims at comparing the anatom-ical outcome following sound eye surgery versus amblyopic eye surgery for correction of unilateral sensory strabismus in adult patients.
Patients and Methods: A prospective study that included 148 adult patients with unilateral sensory strabismus (50 prism Diopters) and amblyopia. Patients were randomly allocated between two groups: Group A included patients subjected to surgery in the sound eye only, and group B included patients subjected to surgery in amblyopic eye only. Patients were followed-up for at least 6 months to detect the anatomical success rate as well as any residual, consecutive or recurrent strabismus.
Results: After a mean follow up period of 7.68±1.93 months in group A, 61 patients (82.4%) had orthotropia, two patients (2.7%) had residual strabismus, 8 patients (10.8%) showed consecutive overcorrection, and three patients (4.1%) had recurrent strabismus. In group B and after a mean follow-up period of 7.24±1.72 months, 49 patients (66.2%) had orthotropia, 3 patients (4.1%) had residual strabismus, 9 patients (12.2%) had consecutive overcorrection, and lastly thirteen patients (17.6%) had recurrent strabismus. The dif-ferences between the results of both groups were statistically significant (p<0.05) only in the patients who achieved orthotro-pia and those with recurrent strabismus.
Conclusion: For unilateral sensory strabismus and ambly-opia in adults, sound eye surgery could give a higher success rate with a lower chance for recurrence at six months, as compared to amblyopic eye surgery.