Myopia, hyperopia and astigmatism are refractive errors that can be corrected with glasses. However, amblyopia is caused by problems in the posterior developmental system of the eye, such as hyperopia or refractive aberration in early childhood, or strabismus, which can cause the eye to not develop to its normal structure, and this situation cannot be solved by wearing glasses. For example, refractive error is actually equivalent to a problem with the lens of a camera, which can be solved through surgery, but if the problem is in the development of the optic nerve, there is no way to correct the problem optically through surgery alone. This condition can only be treated as actively as possible during the early years of life, so that the disease is as well controlled as possible, which is more convenient and easier to treat. If you wait until you are 12 years old or older, you will lose the opportunity for surgical treatment, and wearing glasses may not achieve the full effect, and again surgery will not be able to correct the problem.