By now your child is developing his eye hand coordination and fine motor skills. His eye sight is developed properly.
What you need to know
As your child's motor skills are developing now he must be able to differentiate between all colors. Now, in sometime your child is ready to enter school or must have already entered preschool.He must have got better at his fine motor skills so he is now able to write and draw properly. If you try and cover his one eye he is able to see clearly with the other eye open. You can even ask him to pick up small objects like beads with one eye covered and this would help him to develop his fine motor skills and his eye sight better.