J Korean Ophthalmol Soc.  1986 Jun;27(3):449-454.

Two Cases of Excyclotropia in Superior Oblique Palsy Treated with Barada-Ito Operation

• Lee IS
• Jin YH
• Lee TS

Abstract

Anatomic torsion of globe around the sagittal axis occurs in a large variety of strabismus conditions which are infinitively more common than paralysis of cyclovertical muscles. The anterior half of the superior oblique fibers are probably more effective intorters. The posterior superior oblique fibers are more effective depressors. Anterior shift of the superior oblique tendon has been advocated for treatment of torsional aspect of the superior oblque palsy. We experienced two cases of symptomatic excyclotropia in unilateral superior oblique muscle palsy without substantial vertical deviation. We operated paretic superior oblique muscle with Harada-Ito operation which is anterior and lateral displacement of the anterior fibers of the superior oblique tendon. In two patients with unilateral superior oblique palsy, the excyclotorsional deviations were reduced to 15 degrees to 2 degrees of excyclotorsion in primary position of the gaze and from 15 degrees to 2 degrees of excyclotorsion in downward gaze. In another case the cyclodeviation was reduced from 7 degrees to 0 degree in downward gaze.

MeSH Terms

Axis, Cervical Vertebra
Humans
Muscles
Paralysis*
Strabismus
Tendons