The reduction of myopia from 800 degrees to 100 degrees mainly refers to the correction of myopia, which can be done by optical lens correction or refractive surgery. First of all, children and teenagers whose myopia is still unstable before adulthood, as well as adults who are unwilling to or do not have the condition to undergo refractive surgery, can choose to wear framed glasses or soft and hard corneal contact lenses to carry out optical correction, and the main advantage of this kind of correction is that the correction is easy to be adjusted with little risk and the price is relatively inexpensive. Corneal refractive surgery or ICL IOL implantation for myopia is a somewhat traumatic form of correction. The former is an irreversible form of correction with a price of around 10,000 to 20,000 dollars, while the latter is a reversible type of correction with a price that varies according to the function of the lens chosen and the brand. Besides, there are many other ways of correction by surgery. It is recommended to choose the correction method carefully according to your own needs and actual situation under the advice of your doctor.