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by
Scott Silverman, MD
Fellowship trained Pediatric Ophthalmologist
It
is important for a new mother to understand what to
expect as their new baby's vision develops. An infant's
visual system is immature and continues to develop through
childhood. The cycle begins early in life, starting
while in the womb and completing at age 10.
A
baby begins to see during the first few months of life
as the eyes and visual system mature. A newborn has
poor vision and is unable to focus on objects and can
only see very big shapes and shadows. Their vision measures
worse than 20/400, the biggest letter on an eye chart.
By 3 months of age, objects the size of faces can be
discerned by the baby's eyes. A one year old can see
shapes the size of large newspaper print. Children do
not attain 20/20 vision until approximately 4 years
of age.
Babies
can not fixate or track objects in their first 2 or
3 months of life due to their immature visual system.
However, your baby should be able to fixate and track
objects by 4 months of age. An infant's visual system
is also unable to keep their eyes straight early in
life. Most infants' eyes tend to drift outward. The
eyes straighten as vision develops and infants begin
to use their eyes together by 4 months. If your baby's
eyes are not straight by this time, they should be evaluated
by a pediatric eye specialist.
Your
baby's eyes are growing and changing quickly from birth
until early childhood.
The eye is about 1/3 the size of an adult eye at birth.
The eyes complete 50 percent of their total growth during
the first 6 months of life. The colored part of the
eye, know as the iris, also develops during infancy.
It is normal for eye color to change during the first
year. Many Caucasian infants are born with blue eyes.
This color often changes to brown or hazel as the color-bearing
pigment cells develop. Babies reach their permanent
eye color by one year of age. If you and your spouse
both have blue eyes, your baby's eyes will stay blue.
Otherwise, you can not be sure of their eye color until
one year of age. Babies with Hispanic, Asian and African
American heritage usually have eyes that are dark brown
at birth and do not change color.
Eye
problems in infancy and childhood are often overlooked
because a child will not complain about his/her eyes.
Early recognition and treatment are the keys to preventing
permanent visual impairment.
Warning
signs of vision problems in infants:
- Crossed
or turning out of the eyes at 4 months of age
- Inability
to fixate or track objects by 4 months of age
- Constant
tearing of the eyes or crusting of the eyelashes
- Whiteness
in the center of the eyeball
- Droopy
eyelid or one eye appearing larger than the other
- Family
history of crossed or lazy eye
This
article was written by Dr. Scott Silverman, our fellowship-trained
Pediatric Ophthalmologist.
Dr. Silverman is available at our locations in Sarasota
and Bradenton, Florida. He specializes in children's eye
care, strabismus, amblyopia (lazy eye), double vision,
and eye muscle surgery in children and adults. |