Even though wearing eyeglasses is often just as much a matter of fashion as it is function, they are still primarily used to correct vision. Clear vision results from light rays being bent by your cornea and focused on the retina before sending the picture to your brain through the optic nerve.
People generally require corrective eyeglasses when this process is distorted or disrupted. There are several reasons this might happen, but here are a few of the most common.
If you’re nearsighted, you can see things clearly when they’re at close range but have trouble with objects that are farther away. Nearsightedness is also called ‘myopia’ and it’s characterized by a lot of squinting at things that are in the distance.
Signs that your children may be nearsighted include squinting at the blackboard in school or always trying to sit closer to the television.