Stages of visual development in young children 1.3 Exploration phase (4-6 months): By the age of 4 to 6 months, babies have access to objects and have a better perception of seeing more colors Hearing Hearing is the first sense that already develops in the prenatal period, starting from the first trimester of pregnancy.Neonatal stage (from birth - two months) Newborn babies can see objects around 20 to 30 centimeters 2 Early childhood (2-4 months) The child begins to follow moving objects and shows interest in colorful games and pictures.1 At the age of about three months, babies begin to interact with your facial expressions and voice.2.3.