THE INTRAOPERATIVE FORCED DUCTION TEST. REPORT OF A CASE OF CONGENITAL FIBROUS BANDS.

Abstract

Mechanical anomalies as a cause of strabismus are well known. These include entities involving the muscles such as Duane's syndrome and strabismus fixus as well as abnormalities of the fascial attachments such as Brown's superior oblique tendon sheath syndrome, Johnson's adherence syndrome, and the varied anomalies of check ligaments described so fully by Scobee. The value of a preoperative forced duction test in these as well as any case in which there is limitation of rotation is obvious. The purpose of this report is to present a case of congenital restricting fibrous bands and to draw attention to the importance of the intraoperative as well as preoperative forced duction test in the evaluation of cases of limited motility. Report of Cases Case 1.—History. —A 13-year-old female was first seen at age 9. Having been raised by a guardian, there is no history of pregnancy or birth difficulties. Ptosis and muscle