In normal vision, light enters the eye and the image is focused clearly at a single point on the retina (the light-sensitive area similar to the film of a camera) at the back of the eye. Refractive errors result from an abnormality of either the length of the eyeball or curvature of the front of the eye called the cornea.

The visual milestones are a useful guide to monitor your child’s visual development. If the child does not appear to follow the milestones or if you have any concern, do consult an eye doctor, optometrist or orthoptist for a more thorough eye examination