My sister have 5 month old baby. I don't know he have vision problem r not, y bcz sometimes he look at me well and give respond with smile. and sometimes he won't respond our voice or something toys. and also he couldn't pick any toys themselves, when I give something to him hand, he hold it. bt he cont able to take volentarily any toys to infront of him. don't know exactly it's eye problem or milestone ( late development). plzzz answer me. m vry worry abt it.