OBJECTIVE
To assess the effectiveness of early treatment for amblyopia in children.
DESIGN
Follow up of outcomes of treatment for amblyopia in a randomised controlled trial comparing intensive orthoptic screening at 8, 12, 18, 25, 31, and 37 months (intensive group) with orthoptic screening at 37 months only (control group).
SETTING
Avon, southwest England.
PARTICIPANTS
3490 children who ...