Intermittent Exotropia Questionnaire (IXTQ) - 3 questionnaires- one for the child, one for the parent about the child (proxy), and one for the parent about themselves. - Child < 5 years - (2 questionnaires- proxy and parent questionnaires, no child questionnaire)
- Child 5-7 years - (3 questionnaires- child 5-7y questionnaire, proxy and parent questionnaires)
- Child 8-17 years - (3 questionnaires- child 8-17y questionnaire, proxy and parent questionnaires)
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