The authors present the analysis of the Intermittent Exotropia Questionnaire (IXTQ) completed by children and a parent in a previously reported randomised controlled trial comparing two surgical procedures. Children aged >5 years completed the Child IXTQ, and all parents completed the Proxy IXTQ and the Parent IXTQ at three-time points; baseline prior to surgery, six months postoperatively and 36 months postoperatively. Results from surgery were classified into three groups; resolved, sub-optimal or intermediate. Improvement in IXTQ was reported from baseline to six months and baseline to 36 months by both children and parents. A greater improvement was seen in cases classified as resolved versus sub-optimal, with the intermediate classification sitting in between. The authors discuss other potential influencing factors on the IXTQ scores including positive expectation of surgery, surgeons expressing greater satisfaction with cases in the resolved group and glasses wear. The authors also note limitations of the study including the lack of a control group and Parent IXTQ not being completed by the same parent at follow-up. This study highlights that successful surgery impacts positively on the child’s and parent’s health-related quality of life.