Refractive errors are corrected with glasses and surgical treatment. This is not only to increase visual acuity, but the main purpose is to eliminate visual fatigue. Refractive error means that when the eye is relaxed, parallel light rays passing through the refractive action of the eye do not form a clear image on the retina, but are imaged in front or behind the retina. It includes farsightedness, myopia and astigmatism. Refractive error can cause visual fatigue, and if it is during development, it can also affect visual development, resulting in amblyopia and strabismus in children. Therefore, refractive errors in the eyes need to be corrected in a timely manner. In principle, all refractive errors in children should be corrected at once, with the aim of eliminating the series of visual problems caused by visual fatigue. If not corrected early in early childhood (4-6 years old), the development of visual function will be somewhat inhibited. In adults, the first correction of astigmatism with a larger degree may have some visual disturbance symptoms, the patient feels that the size and shape of the object image is not the original appearance, and it is easy to cause errors in spatial orientation, you can wear low degree corrective glasses first (more than half of the astigmatism correction), slowly adapt, and then increase the degree afterwards. With the advancement of technology, for adults, in addition to glasses, refractive errors can also be corrected by means of surgery, such as femtosecond laser keratomileusis and lens eye IOL implantation, for patients who are not convenient to wear glasses. In summary, refractive errors found in the eyes should be corrected in a timely manner. Depending on the needs of daily life, one can choose to wear glasses or undergo surgical treatment.