Vision in the first months of life

All parents try to look in their children’s eyes and they usually
achieve it in the fourth to sixth month of their life. If an infant
that is older than 6 months old cannot look into the eyes of their
parents, this might mean some underlying problem in vision.

In the beginning, the infant's eyes are closed most of the day and both
the ability to concentrate and their eye movements are very limited.

Gradually though, infants begin to use their eyes increasingly,
expressing more interest in nearby objects than for those farther
away. As the child grows, its vision improves and its interest will
increasingly focus on distant objects.

The measure of our ability to single out objects is called visual acuity.

There are several ways to quantitatively describe the visual acuity, but we
usually use a fraction with its denominator being the distance that a
"normal" person sees an object clearly and its numerator
being the distance the individual being tested sees the same object.

Greece has dominated the tithing system, where a normal person sees 10/10.

For example a patient with a 5/10 vision must approach objects up to
5 meters, to see objects that a normal person can distinguish from
10.

Please note that in no way our example of 5/10 vision means
'half' visual ability and such a vision is enough to obtain a driver's license.

Newborns have a pretty good vision so that they can distinguish a person in
the end of the room. When they are 12 months old, their vision
improves up to 2-3/10, at 24 months old it reaches 6-7/10 and a 10/10
is achieved at 36 months old.