How to restore refractive error

Refractive error is a very common disease in ophthalmology. Refractive error refers to the fact that when the eye is adjusted to rest, the parallel light from the outside world cannot focus on the macular fovea of the retina after passing through the refractive system of the eye, and cannot produce a clear image. This refractive state is called refractive error. Generally, refractive errors are mainly divided into three types: myopia, hyperopia and astigmatism. At present, there are three main methods for correcting or treating refractive errors: The first is glasses, the second is contact lenses, and the third is refractive surgery. The optical principle of these is to pass the lens or change the refractive power of the refractive surface of the eye to achieve a clear image on the retina. Glasses are one of the most traditional and classic methods of correcting refractive errors. Glasses are characterized by safety, simplicity and economy. Contact lenses can reduce the problem of image magnification caused by glasses. Refractive surgery is also a method that many patients can accept to correct refractive errors at this stage. If patients show refractive errors, they can choose these three methods according to their own conditions, and then symptomatic treatment.