title: Visual acuity development in infants and young children, as assessed by operant preferential looking.
mesh_terms: D000328:Adult; D000375:Aging; D002657:Child Development; D002675:Child, Preschool; D003216:Conditioning, Operant; D006801:Humans; D007223:Infant; D010364:Pattern Recognition, Visual / Q000502:physiology; D011594:Psychometrics; D014792:Visual Acuity