Improved suppression after surgery for intermittent exotropia
Reviewed by Fiona Rowe

This study aimed to investigate the clinical factors associated with the recovery from suppression, with successful postoperative target motor alignment in 237 patients with intermittent exotropia. Mean age at surgery was 8.2 ±3.2 years and 48.5% were male. Preoperative angle was 26.3 ±5.9PD at distance and 26.9 ±6.2PD at near. Preoperative stereoacuity was 100” median. Unilateral and bilateral recessions were in 26 and 211 patients respectively. Mean follow-up was for 21.6 ±7.6 months. Postoperative angle was 1.7 ±4.3PD at distance and 1.3 ±4.4PD at near. No suppression was detected in 23, 55 had alternate suppression and 159 had constant suppression; 90.7% achieved their target motor alignment. Two groups were evaluated with ≤20PD or >20PD preoperative angle. Of 60 with ≤20PD angle, 31 had constant suppression preoperatively and all showed no suppression at follow-up; 15 with alternate suppression reduced to two at follow-up. Of 155 with >20PD angle preoperatively, 113 with constant suppression reduced to 12 at follow-up; 35 with alternate suppression reduced to one at follow-up. Overall, 77.8% had improved suppression. Preoperative angle was significantly larger for those with persistent postoperative suppression.

Recovery from suppression with successful motor alignment after surgery for intermittent exotropia.
Huh J, Ha S-G, Kim S-H.
JOURNAL OF PEDIATRIC OPHTHALMOLOGY AND STRABISMUS
2020;57:21-6.