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A new approach to the dosing degree of anterior transposition of the inferior oblique muscle surgery for vertical strabismus
Introduction: despite numerous reports of surgical interventions on the muscles of vertical action a differentiated approach to the treatment of patients with this pathology does not exist. The goal is to develop a method of dosing the degree of anterior transposition of the inferior oblique muscle in the surgical treatment of vertical strabismus caused by hyperfunction of the inferior oblique muscle of varying degrees of severity, and to evaluate its clinical efficacy. Material and methods: in the period from January 2013 to October 2015, the observation of 60 children (96 eyes) aged from 3 to 17 years with a vertical strabismus caused by hyperfunction of the inferior oblique muscle was made. All patients underwent surgical treatment. The weakening of the inferior oblique muscle through its anterior dosed transposition is performed. Results: intraoperative complications in both cases were not observed. In neither case was noted to have specific complications, characteristic weakening surgeries on the inferior oblique muscle. Overcorrection was not observed neither in the case of surgical treatment of large vertical angles of strabismus, or in cases of surgical treatment small vertical deviations. Restriction of mobility of the eyeballs was not recorded throughout the observation period in any patient. Residual hyperfunction of the inferior oblique muscle in 3 patients (5 %) did not exceed the value of the vertical, with the fusion and did not require additional surgical treatment. Conclusion: the technology will significantly improve the efficiency and safety of treatment, significantly reduce the risk of complications, reduce the duration of surgery and anesthesia benefits the child, the number of surgical treatment stages, to create optimal conditions for restoration of visual functions in children.
strabismus; vertical strabismus; surgical treatment; hyperfunction of the inferior oblique muscle
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