Comparison of Alternate Part-time Patching and Pencil Push-up Training for Patients with Intermittent Exotropia

Abstract

Background To compare the effect of alternate part-time patching and pencil push-up training on control ability in patients with intermittent exotropia. Methods Patients (3-7 years of age) with previously untreated intermittent exotropia were randomly assigned to receive alternate part-time patching, pencil push-up training or observation. Control ability was assessed using the Office Control Score. Stereoacuity at 40cm was evaluated with Titmus. Results were compared after 12-weeks follow-up. Results Ninety-two patients (28 in patching, 30 in pencil push-up and 34 in observation group) completed baseline and 12-week follow-up assessments. On the basis of 6-point scale, the mean deviation control was significantly better in patching and pencil push-up group after 12 weeks at distance (P=0.002 and 0.026, respectively). Furthermore, there was greater control changes in patching and pencil push-up groups in comparison with observation group from baseline to 12 weeks (P༜0.001;P=0.003, respectively). After 12 weeks of treatment, stereoacuity and stereoacuity changes were not significantly different between either of the intervention group and control group (P=0.140 and 0.393, respectively). Conclusions Based on the common office control scales, alternate part-time patching and pencil push-up training were effective treatment strategies for intermittent exotropia.