Abstract
BackgroundTo compare the rate of exodrift after a second surgery for recurrent exotropia, in patients grouped to fast versus slow exodrift after their first surgery. To determine whether there is a correlation with surgical outcome, and to evaluate the factors associated with fast exodrift.MethodsPatients with recurrent intermittent exotropia, who underwent contralateral lateral rectus recession and medial rectus resection as the second surgery and were followed up for 24 months postoperatively between January 1991 and January 2013, were reviewed retrospectively. The patients were divided into two groups according to the rate of exodrift after the first surgery: Group F, patients exhibiting fast exodrift after the first surgery (> 10 prism diopters [PD] before postoperative month 6); and Group S, patients exhibiting slow exodrift after the first surgery (≤10 PD before postoperative month 6). The difference in the clinical course over the 24 months after the second surgery between the two groups and factors associated with fast exodrift were analyzed.ResultsIn total, 106 patients with recurrent exotropia were enrolled in this study. Of these, 68 (64.2%) and 38 (35.8%) patients were included in group F and S, respectively. Group F showed more exodrift compared with groups S over the 24-month postoperative period; however, there was no significant difference in the clinical course between the two groups during that time (p = 0.54, repeated-measure ANOVA). In logistic analysis, immediate postoperative deviation after the first surgery was associated with fast exodrift (p < 0.001).ConclusionAlthough patients with recurrent exotropia had shown fast exodrift after the first surgery, no significant difference in the surgical outcome was observed after the second surgery according to the rate of exodrift after the first surgery.
Highlights
To compare the rate of exodrift after a second surgery for recurrent exotropia, in patients grouped to fast versus slow exodrift after their first surgery
Patients included in this study were divided into two subgroups according to the rate of exodrift after the first surgery: group F comprised patients with recurrent exotropia who exhibited fast exodrift after the first surgery (> 10 prism diopters (PD) before postoperative month 6); and group S comprised patients with recurrent exotropia who exhibited slow exodrift after the first surgery (≤10 PD postoperative month 6)
The result of this study showed that patients exhibiting fast exodrift after the first surgery were not more likely to exhibit fast exodrift after the second surgery
Summary
To compare the rate of exodrift after a second surgery for recurrent exotropia, in patients grouped to fast versus slow exodrift after their first surgery. To determine whether there is a correlation with surgical outcome, and to evaluate the factors associated with fast exodrift. Recurrent or persistent exodeviation may occur in patients with intermittent exotropia following surgical treatment [1,2,3,4]. Patients with intermittent exotropia who underwent surgical treatment generally experience postoperative exodrift over time [5]. When a patient who has undergone surgical treatment shows noticeable exodeviation in a short period of time, a second surgery would be considered to restore the ocular alignment. When planning the second surgery for patients with recurrent exotropia, one question frequently arises: do.
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