Surgical management for large hypertropia and exotropia after disinsertion of inferior rectus muscle.

A patient who developed a large hypertropia and exotropia following disinsertion of the inferior rectus muscle after a blowout fracture of the orbital floor showed good primary alignment and binocular single visual field after the following staged surgeries: (1) anterior transposition of the inferior oblique muscle, (2) superior rectus muscle recession, and (3) augmented inferior transposition of the horizontal recti muscles combined with recession-resection surgery.