Epidemiology of Intermittent Exotropia in Preschool Children in China

Purpose To determine the prevalence, subtypes, and associated risk factors for intermittent exotropia (IXT) in preschool children aged 3 to 6 years in eastern China. Methods A population-based study including 5831 preschool children aged 3 to 6 years was conducted from 2011 to 2012 in Yuhua District, Nanjing, China, using an age-stratified random sampling procedure. Clinical examinations including ocular alignment, ocular motility, visual...