Final answer:
Infants have the ability to see at 20 feet of distance what an adult can see at 200 to 400 feet of distance.
Newborns have underdeveloped vision and can see at 20 feet what an adult can see at 200 to 400 feet away. Their focus is best at a distance of about 18 inches, suitable for seeing the mother's face and for breastfeeding. Adult vision can clearly see from 25 cm to infinity.
Step-by-step explanation:
Infants have the ability to see at 20 feet of distance what an adult can see at 200 to 400 feet of distance. Newborns' vision is not completely developed, as their retinas and brain parts involved in vision are still maturing. A person with normal (ideal) vision can see objects clearly at distances ranging from 25 cm to essentially infinity. Infants typically can focus on objects that are 18 inches away, which is adequate for seeing the mother's face as well as the areola and nipple during breastfeeding.
Adult vision can achieve clear focus from objects at about 25 cm to infinity. However, the vision at birth is not equivalent to the vision of an adult in terms of acuity and distance. This changes significantly during the first few months of life as the eye and the brain's visual pathways develop rapidly.