Study	Reason for exclusion
Arnoult 1976	Compared 2 groups retrospectively.
Birch 1995	Prospective cohort, no control group.
Birch 1998	2 cohorts studied ‐ 1 retrospective, 1 prospective. Assessed natural history of infantile esotropia.
Ing 1992	Not a trial.
Kushner 1984	Randomised trial of graded versus standard recessions for infantile esotropia ‐ not one of the interventions looked at in this review.
Polling 2009	Follow‐up data was only available for a three month period. This review is only including studies were follow‐up data is available for six months.
Simonsz 2005	Non‐randomised trial.