An 18 year old child with 1000 degrees of refractive error in his eyes should first identify the type of refractive error and take corrective measures corresponding to the different types. Refractive errors are mainly categorized into three types: myopia, hyperopia, and astigmatism, of which different types of refractive errors of 1000 degrees are treated differently. Myopia: 1000 degrees of myopia belongs to ultra-high myopia, which can be corrected by wearing glasses or performing refractive surgery, such as posterior chamber IOL implantation for crystalline eyes. Astigmatism: 1,000 diopters is a very high degree of astigmatism, which can seriously cause vision loss and is mostly caused by pathological factors. It is necessary to go to the hospital to complete the relevant examinations and treat the underlying diseases, and can also be considered to be corrected through the use of rigid corneal contact lenses or framed spectacles, and in severe cases, corneal transplantation can be carried out to improve the visual acuity. Hyperopia: currently not suitable for surgical treatment, usually need to wear frame glasses to correct. In conclusion, an 18-year-old child with 1000-degree eyes should choose the appropriate treatment plan according to the different types under the guidance of the doctor.