The therapeutic effects of inferior oblique weakening surgery for 263 superior oblique paralysis patients

Objective To discuss the therapeutic effects of different inferior oblique muscles weakening surgery for superior oblique paralysis.Methods 163 patients with superior oblique paralysis from Jul 2004 to Jun 2010 were performed inferior oblique muscle myectomy and anterior transposition,recession,myectomy and tenotomy.Results 118 cases had head posture pre-operation,73 cases disappeared post-operation(61.86%),40 cases was better(33.89%) and 5 cases was of no effect(4.23%).Finally,142 cases were cured(87.12%),12 cases were improved(7.36%),6 cases received no effectiveness(3.68%) and 3 cases overcorrected(1.84%).Conclusion The clinic symptoms are complicated and the surgery methods are various for superior oblique paralysis,we should choose proper surgery method.The mean corrective data of myectomy and anterior transposition is higher than other methods.During this operation,we should resect inferior oblique enough to weaken the power,commnly 6~8 mm.