People are often confused about the importance of glasses for children.
Some believe that if children wear glasses when they are young,
they won't need them later. Others think wearing glasses as a child
makes one dependent on them later. Neither is true. If children
need glasses, it is because they are nearsighted,
farsighted,
or astigmatic.
These conditions do not go away nor do they get worse because they
are not corrected. Glasses or contacts are necessary throughout
life for good vision.
Nearsightedness (distant objects appear blurry) typically begins
between the ages of eight and fifteen but can start earlier. Farsightedness
is actually normal in young children and not a problem as long as
it is mild. If a child is too farsighted, vision is blurry or the
eyes cross when looking closely at things. This is usually apparent
around the age of two. Almost everyone has some amount of astigmatism
(oval instead of round cornea). Glasses are required only if the
astigmatism is strong.
Unlike adults, children who need glasses may develop a second problem,
called amblyopia or lazy eye. Amblyopia means that even with the
right prescription, one eye (or sometimes both eyes) does not see
normally. Amblyopia is more likely to occur if the prescription
needed to correct one eye is stronger than the other. Wearing glasses
can prevent amblyopia from developing in the more out-of-focus eye.
Children (and adults) who do not see well with one eye because of
amblyopia, or because of any other medical problem that cannot be
corrected, should wear safety glasses to protect the normal eye.