Superior oblique recession in treatment of strabismus with superior oblique overaction

Abstract

Objective To investigate superior oblique recession in treatment of strabismus with superior oblique overaction and effects on torsion status. Methods Pre- and Post-operative primary,upward, downward and 9 diagnostic eye position of deviation, superior oblique muscle function, fundus photograph were examined and analyzed in A-pattern, inferior oblique palsy and Brown syndrome with superior oblique overaction. Results The maximum pre-operative deviation difference between upward and downward gaze was 53△ whereas minimum was 17△ in A-pattern. All post-operative deviation difference was not more than 10△. The mean pre-operative fovea-disc angle (FDA) of both eyes was (20.32±8.53)°whereas (4.15±7.22)°after operation in A-Pattern. The pre-operative vertical deviation in inferior oblique palsy and Brown syndrome patients was more than 10△ whereas post-operative not more than 6△. The mean pre-operative FDA of both eyes was (11.32±7.11)°whereas (2.65±2.52)°after operation. Conclusions Superior oblique recession is effective in correcting strabismus with superior oblique overation and intorsion. Key words: Superior oblique recession; Superior oblique overacton; Torsion