Abstract
PURPOSE: To compare the clinical assessment of fixation preference (FP) to visual acuity (VA) in a population-based sample of preschool children with amblyopia risk factors. DESIGN: Evaluation of diagnostic test in a population-based study. PARTICIPANTS: 243 children with anisometropia and/or strabismus, aged 30 to 72 months, living in Los Angeles County, CA [corrected] METHODS: Before measuring VA, FP testing was performed at near and usually without correction, using the binocular fixation pattern in children with strabismus >10 prism diopters (Delta), or the induced tropia test for children with strabismus