Nystagmus is the constant movement of the child’s eyeballs, either horizontally or vertically, or rotationally. Most of the children in this group have poor vision. Some children look at people with their heads tilted, some with their heads down, some with their heads up, and in general, they cannot look at things with their eyes straight. Other children have albinism. There are always some children’s grandparents who say that they have taken their children to the hospital, but the doctor said that there is no treatment. This is actually not the case. Nystagmus can be treated by surgery. One goal is to reduce the frequency of nystagmus, and the other is to allow the child to look at people with straight eyes.