Myopia (near-sightedness or short-sightedness) is a visual defect suffered by myopic or short-sighted people, who can clearly see close objects, but can’t properly focus far distance ones.
Refractive surgery aims to correct refractive errors, such as myopia, hyperopia, astigmatism or presbyopia to obtain a good visual quality and to avoid depending on the use of glasses or contact lenses.
Childhood myopia is the refractive defect that causes blurred vision for objects that are far away, affecting children. It is usually treated with prescription glasses.