[Management of the A-pattern deviation with overacting superior oblique muscle].

The overacting superior oblique muscle is usually associated with A-pattern ocular deviation. 10 such cases (14 eyes), 9 exotropic and 1 esotropic, were performed superior oblique tenotomy with horizontal and vertical corrective surgery; they all attained postoperative normal ocular alignment in the primary position. The A-pattern deviation was corrected and overaction of the superior oblique improved. The authors point out that in the absence of binocular vision and abnormal retinal correspondence, superior oblique tenotomy is a safe and useful procedure for patients with 20 delta and over of A-pattern deviation.