If the eyes of infants are exposed to direct sunlight for a long period of time, the retina may be burned and the vision may be affected. At this time, it is necessary to judge whether there is any damage according to the symptoms of the child and the results of the examination, for example, to observe whether the child’s light-following test is positive or not, and to do the OCT of the fundus of the eye to judge whether there is any burn of the retina. Children’s eyesight is still not well developed, but for flashlights or other luminous objects will have the performance of following, using a flashlight placed in front of the child, and then move the position of the flashlight, observe whether the child’s eyes will rotate with the change of the position of the light source, if it does not rotate, then it means that the child’s eyesight has been seriously impaired. The oct examination is by far the most direct evidence to determine if there has been burns to the retina from bright light, and if burns do occur, it can reveal that the structure of the retina has been damaged. In addition to avoiding direct light, laser pointers and the like have the potential to damage a child’s retina, so they should also be avoided.