Abstract
Purpose :
To evaluate the outcomes of between bilateral lateral rectus recession (BLR) and unilateral recession-plication (RP) for intermittent exotropia, and investigate the factors associated with surgical outcome.
Methods :
Patients with intermittent exotropia who underwent BLR or RP between 2008 and 2016 were observed for ≥ 6 months. Patients were classified into two groups based on angle of distant deviation: successful (orthophoria or exodeviation ≤ 10 prism diopters [PD]) or recurrence (exodeviation > 10 PD). Preoperative and postoperative ophthalmologic factors were compared between two groups.
Results :
Of 176 patients, 116 underwent BLR and 60 underwent RP. Preoperative maximal angle of deviation was 31.7 ± 6.0 PD at distance and 32.5 ± 6.3 PD at near in the BLR group, and 28.3 ± 4.9 PD at distance and 32.3 ± 4.3 PD at near in the RP group. Preoperative factors such as age, sex, and refractive errors were not significantly different between two groups. The final outcome at a mean of 16.5 months was significantly different between the groups, demonstrating a higher success rate in the BLR group than in the RP group (60.8% vs 36.7%, P < .01). Recurrences were most common within 6 months from surgery; however, after that, recurrences occurred continuously in the RP group and rarely in the BLR group.
Conclusions :
Surgical outcomes were better in the BLR group than in the RP group. Continuous recurrence of exotropia occurred in the RP group, while recurrence was low in the BLR group after postoperative 6 months.
This is an abstract that was submitted for the 2018 ARVO Annual Meeting, held in Honolulu, Hawaii, April 29 - May 3, 2018.