It takes two years for children to develop their visual system. However, some signs might indicate your child is prone to blindness. If your child is constantly rubbing his/her eyes or unable to focus on an object then s/he is at high risk of being blind. Severe redness in the eyes, higher sensitivity and inability to stand light are the symptoms you should be watching out for to prevent your child from blindness. If your child has teary eyes most of the time and has any type of eye movement that isn’t normal, then there are chances of visual impairment.
There is another sign that might indicate blindness. If your child has a white pupil then he might be suffering from visual impairment. If you see any of these signs and symptoms then you should contact a pediatrician immediately to ensure your child is given proper treatment before it is too late. Note that by 8 weeks, your child should be able to properly focus on a single object. By this time, his eyes should be able to follow the object without any difficulty. When your child is 4 months old, you should notice the proper alignment of his eyes. If something seems amiss, then you should book an appointment at the earliest.