Results of superior oblique tenectomy in inferior oblique paresis.

Surgical weakening of the overacting ipsilateral superior oblique muscle in patients with isolated inferior oblique palsy consistently improves action of the paretic muscle. However, such patients may have a gradually progressing paralysis of the tenectomized muscle develop along with deterioration of binocular function and thus need additional surgery. This complication occurred in three of six consecutive patients with inferior oblique palsy.