Published online Apr 26, 2023. doi: 10.12998/wjcc.v11.i12.2796
Peer-review started: November 15, 2022
First decision: February 14, 2023
Revised: March 3, 2023
Accepted: March 22, 2023
Article in press: March 22, 2023
Published online: April 26, 2023
Inferior oblique anterior transposition (IOAT) has emerged as an effective surgery in the management of dissociated vertical deviation (DVD) combined with superior oblique palsy (SOP). Traditional IOAT usually provides satisfactory pri
We report the outcomes of the modified unilateral IOAT in two patients with unilateral DVD combined with SOP. The anterior-nasal fibers of the inferior oblique muscle were attached at 9 mm posterior to the corneal limbus along the temporal board of the inferior rectus muscle, the other fibers were attached a further 5 mm temporal to the anterior-nasal fibers. Postoperatively, both hype
In these cases, the modified unilateral IOAT was an effective and safe surgical method for treating DVD with SOP.
Core Tip: Inferior oblique anterior transposition (IOAT) is effective for dissociated vertical deviation combined with superior oblique palsy; however, unilateral IOAT also increases the risk of the anti-elevation syndrome. This modified unilateral IOAT involves a more backward new insertion and the new insertion line perpendicular to the inferior rectus muscle axis, which provides satisfactory primary position alignment and restricts the superior floating phenomenon without obvious postoperative complications.