Focusing and learning to use their eyes together properly takes time. Plus, a baby's brain has to learn how to process and react properly to the information his or her eyes are sending it. Even so, exploration through sight is one of the first things your baby starts doing at birth. 

Healthy eyes and good vision are very important because difficulties in seeing properly can affect other areas of your child's development and learning. Just as you are keeping track of your child's development in other areas, you'll want to do the same with his vision. 

Here are some developmental milestones to watch for. Keep in mind that no two children are alike and, just because your child might not be keeping up with the "norm," it doesn't necessarily mean that there is cause for concern.