This section contains 842 words (approx. 3 pages at 300 words per page) |
The infant eye is only partially developed at birth. Newborns are generally very far-sighted—they can see light and shapes and notice movement, but the eyes focus only 8-15 in (20-38 cm) away. This corresponds to about 20/400 vision. Eye movements are not coordinated in the newborn, and the eyes may not begin to move together until four weeks or after. Binocular vision develops between two and six months of age, and by five months, the infant's vision has generally improved to about 20/100. By the age of two, a normal child's vision is still only about 20/60, and 20/20 vision is not approached until the child is between four and five years old, or later.
The newborn eye appears different from the adult eye. The iris lacks pigment, so many babies are born with grayish blue eyes—the mature eye color does not develop for...
This section contains 842 words (approx. 3 pages at 300 words per page) |