These skills involve moving, focusing and teaming the eyes so they may function efficiently. Vision skills include several components.
Fixation is the ability to direct and maintain steady, central visual attention on a target.
This basic skill is developed in infancy and refined through the early years. The infant reflexively turns the entire upper torso toward the direction of a noise, then gradually learns to turn only the head to guide the visual system. Through the toddler years the individual refines this movement system by learning to use eye muscles to replace head movement - an achievement important in visual readiness for school. Eventually vision becomes the dominate sense. Accommodation is another component skill involving focusing the light entering the eyes.