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When a person is nearsighted, images in the distance appear blurry. One may find that these images become clearer when you squint. For example, nearsighted students might be able to easily read their books and see students sitting near them, but the teacher and, more importantly, the words on the chalkboard look blurry. Nearsightedness, also called MYOPIA, occurs when light rays entering the eye bend too much, coming to a point of focus before the reach the retina. With nearsightedness, your eyes may be longer than normal or the cornea may be too curved. As a result, the images you see don't focus on the retina as they should.

Nearsightedness normally develops in childhood and is first detected when parents realize their children cannot see the chalkboard at school. It tends to worsen throughout the teenage years and then stabilizes during early adulthood. It can occur with or without astigmatism.

Nearsightedness is commonly treated with either glasses, contact lenses, or both. It can also be corrected surgically by performing LASIK on PRK (laser vision correction).


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