1-2 months baby:
A, I will smile at the pictures I like and glance at the pictures I don't like. (Test the visual resolution. A mother should take her baby to look at pictures every day and talk while watching them, so as to arouse the baby's interest and prepare for induced recognition. )
B, head and eyes rotate at the same time 180 degrees, tracking the red toy. (Test the tracking ability. Red toys can be placed above, below or slowly in front of the baby, training the coordination between the baby's head and neck movements and eyes, and broadening his horizons. )
Neonates have light-induced reaction at birth, and strong light irradiation can cause eyes to close; From the second month, you can look at objects in harmony; 3 months old, toys or people who can pursue initiative; After 4-5 months, you can know your mother and look at the bottle and other things to express "joy". 2, 4-5 months old children, eyes can freely chase dynamic toys, paintings and people. I often like to look at my little hands. When I see my mother's face, I will smile, or when I see a bottle, I will express my joy. Therefore, colorful toys can be hung in front of the baby's bed to train the baby's eyesight. If the child does not have the above reaction, parents should be vigilant.
References:
Baidu Encyclopedia _ Infant