For 4-year-old children with 200-degree astigmatism, it is possible to improve their visual acuity through correction, and at the same time prevent and control the development of myopia or amblyopia. The development of vision of 4-year-old children is still in an important developmental period, and the 200-degree astigmatism found in this period needs to be corrected in time, through correction of visual acuity can be improved to a certain extent, for the normal development of children’s eyesight, myopia and amblyopia and other conditions have a role in preventing and controlling the development of myopia and amblyopia. However, since the vision of 4-year-old children is still not fully developed, to reach the level of normal adults through the correction of astigmatism can not be reached, the best can only reach the normal visual acuity of 0.8 or so at this age, if you do not correct the vision in time, not the normal development of amblyopia may occur. It is recommended that children in the critical period of visual development age myopia and astigmatism, to go to the hospital in a timely manner, in accordance with the doctor’s advice and reasonable treatment.