Visual skills and intellectual development: a relationship in young children.

The development of convergence, ocular motilities; stereopsis and form perception for infants and young children was evaluated in a previous paper. This study examines the relationship between these visual skills and intellectual development. Young children (n = 130) were assessed longitudinally every six months from the ages of 12- to 42-months. The results showed positive and significant correlations between visual skills and intellectual development during infancy and the preschool years. Stereopsis and form perception correlated most highly and consistently with intellectual development.