Most newborns have their eyes fully open by the second or third day of life, while some newborns may be a little later and may not open their eyes for more than a week.
The exact time for a newborn’s eyes to fully open varies from person to person. The visual structure and optic nervous system of newborns are immature, and newborns need some time to perfect their visual function and adapt to the external environment.
Generally, a newborn’s eyes can be fully opened within two to three days after birth, but some newborns have edema of the eyelids, thick subcutaneous fat, and some do not open their eyes for more than a week.
Because the newborn’s visual system is not yet mature, it is important to install a dimmer light in the newborn’s bedroom to avoid bright light, so as not to strongly affect the newborn’s optic nerve.
If the newborn does not open his eyes especially late, it is recommended to seek medical attention to find the cause.