[Tenotomy of the superior oblique muscle in treatment of A-pattern strabismus and Brown syndrome].

The superior oblique tenotomy and tenectomy is an very effective and predictable surgical method in correcting the A-pattern in strabismus when overaction of one or both superior oblique muscles is present. In this series of 42 patients with an A-pattern an average correction of 86 to 91% was obtained regardless of the degree of the A-pattern. So we didn't observe any case that was converted from an A- to a serious V-pattern as obviously a less reduction is obtained in lesser degrees of A-pattern. In 11 cases of true but atypical Brown's-syndrome the tenotomy of the superior oblique muscle had a very beneficial effect on the limited movement of the affected eye and a co-existing abnormal head posture.