The treatment of mild refractive error at the age of 12 years old is mainly by wearing corrective eyeglasses. Mild refractive error is less difficult to treat, and it is recommended that it be detected and treated as early as possible. Mild refractive errors are categorized into farsightedness, nearsightedness, and astigmatism. Before treatment, it is important to have a dilated eye exam to understand the specific type of refractive error and to wear corrective lenses that are appropriate for you. Mild refractive errors in 12 year olds are more varied and the causes are more complex, and must be treated on a case-by-case basis. Some children are prone to refractive errors, which require regular checkups and timely lens adjustments. In normal times, attention should be paid to eye hygiene, rational use of eyes, so that refractive error can also play a complementary therapeutic effect. If you feel unwell, you should go to the hospital in time and consult your doctor.