Nearsightedness is the result of the visual image being focused in front of the retina rather than directly on it. It may be caused by the eyeball being too long or the focusing power being too strong.
Nearsightedness may be present at birth but often develops after birth. Low amounts of myopia are not a concern in infants and toddlers since most of their needs are at arms length. When children reach school, myopia may cause difficulties while looking at distant objects like the board at the front of the room. This is While children may be having difficulties, they rarely complain about the blur because they do not know that the world should look differently than it does. Glasses or contact lenses may be required to correct the vision for distance tasks like watching a sporting event, listening to a lecture or driving. If you have family members who are nearsighted, you are also more likely to become nearsighted.
Myopia progression has been shown to be reducible. Here are some peer reviewed articles regarding various modes of reducing progression.