Refractive errors in children usually do not clear up on their own and need to be corrected with prescription lenses. Refractive error means that when the eye is at rest, parallel light rays from the outside world pass through the refractive system of the eye and cannot be focused at the center of the macula of the retina, resulting in an inability to image clearly. The causes of refractive error are genetic, environmental, and prolonged use of the eyes in the wrong posture and other factors. Refractive errors are generally not self-curing and require treatment to correct vision. If a child develops refractive error, he or she will need to be prescribed glasses to control the progression of the refractive error and improve the symptoms. If children are not treated in a timely manner, the refractive error can become more severe with age and affect the development of retinal cells, which can have an impact on future vision. Therefore, if a child is diagnosed with refractive error, parents should bring the child to a regular hospital and take relevant treatment measures under the guidance of a doctor, and ensure proper eye use habits and do not overuse the eyes.