What is nearsightedness?
Nearsightedness (myopia) is a
common cause of blurred vision. It can be mild, moderate, or severe. If you are nearsighted, objects in the distance
appear blurry and out of focus. You might squint or frown when trying to see
distant objects clearly. View a
photo as seen through a normal and a nearsighted eye .
Nearsightedness is usually a variation from normal, not a disease. Less often,
nearsightedness happens because of another disease or condition.
What causes nearsightedness?
is caused by a natural change in the shape of the eyeball.
Less often, nearsightedness may be caused by a change in the
cornea or the lens .
These problems cause light rays entering the eye to focus
in front of the retina . Normally, light focuses directly on the
What are the symptoms?
The main symptom is blurred vision when looking at distant objects. If you can see well enough to read newspaper print but you struggle to see things that are farther away, you are probably nearsighted. You may have
trouble clearly seeing images or words on a blackboard, movie screen, or
television. This can lead to poor school, athletic, or work performance.
Your child may be nearsighted if he or she squints or
frowns, gets headaches often, or holds books or other
objects very close to his or her face. Children who are nearsighted may sit at
the front of the classroom or very close to the TV or movie screen. They may
not be interested in sports or other activities that require good distance
If you think that your child may be nearsighted, see an eye care
specialist. Treating nearsightedness
early is important. With better visual skills, your child won't have as much trouble doing school work and other activities that require a person to see things far away.
When does nearsightedness start? How does it change over time?
Nearsightedness usually begins in childhood between ages 6 and 12. During the teen years, as the eyeballs continue
to grow, it may develop or get worse quickly. Teenagers may need
new glasses every 12 months or even more often.
usually stops getting worse by age 20. Most nearsightedness stabilizes at a mild to moderate