The authors aimed to evaluate whether or not there exists standardisation of outcome measures amongst studies in the literature reporting results of surgery for intermittent exotropia. A 10 year literature review was conducted from 2002-2012 with extraction of English language papers. Fifty-six studies met the inclusion criteria: 24 prospective and 32 retrospective. The reported outcome measures were classified into four categories: postoperative alignment, sensory status, control measures and long-term changes. Eighty-nine percent of studies used postoperative alignment as a measure of success. There were eleven different definitions of what successful alignment meant. Ten percent used sensory status, distance and near stereoacuity as measures of success. Twenty-one percent reported success as a distance angle between 0-10PD; 14% as <5PD esotropia or <10PD exotropia. The time point for reporting outcomes was two months to two years postoperative. Seven percent measured quality of life and patient reported outcome measures. The authors recommend four outcome measures for future studies including alignment, near stereoacuity, control score and quality of life score.
Review of IDeX surgical outcome measures
Reviewed by Fiona Rowe
Standardising reported outcomes of surgery for intermittent exotropia – a systematic literature review.
CONTRIBUTOR
Fiona Rowe (Prof)
Institute of Population Health, University of Liverpool, UK.
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