Zhang Ping, a high school friend, brought his three-year-old child to see me. He recently noticed that his child liked to look sideways when watching TV, and then looked sideways again after a while after correction. After examination, mild internal strabismus and amblyopia were found. In clinical practice, I often hear parents ask: Is my child suffering from “crossed eyes” because he often looks sideways at the TV or likes to look down and up at objects? This can happen in children with strabismus as well as in children with non-strabismus. It is best to take your child to the hospital and have him or her examined by an ophthalmologist to determine this. Strabismus is commonly referred to as “crossed eyes”, “crossed eyes”, and “squinting white eyes”. Strabismus is the inability of both eyes to see the target at the same time, which is manifested by one eye looking at the target while the other eye is off to the side (it can be off to the inside, outside, above or below, most commonly internal and external strabismus). Patients with strabismus cannot produce stereo vision, and a significant number of patients also have amblyopia due to strabismus (amblyopia is defined as corrected visual acuity below 0.9). Most of the patients with strabismus are children, and it is not only an aesthetic problem, but also affects their normal psychological development and their future career choice due to the ridicule of others. Therefore, when parents find that their children or their friends and relatives find that their children are looking at things crookedly, or when teenagers who know how to look at themselves in the mirror find that they have strabismus, they should go to the hospital to confirm whether they really have strabismus. Children often look at TV sideways or like to look down and up, this posture may be one of the following conditions even if there is no strabismus: 1, refractive abnormalities, including myopia, hyperopia, astigmatism; 2, compensatory head position of nystagmus, that is, the patient in this position is the lightest nystagmus; 3, various reasons (such as cranial tumor compression or infiltration of the nerves governing eye movements, etc.) caused by the eye muscle paralysis Some children have a low nasal bridge and the distance between the inner canthus (i.e., the shortest distance between the two eyes) is too far, which can give a “cross-eyed” appearance, but in fact there is no eye deviation, which is also called pseudostrabismus in clinical practice, and is actually an inner canthus. This is also known as pseudostrabismus, which is actually an inner canthus. If the strabismus is indeed strabismus, there is no need to be nervous because not all strabismus must be treated surgically. The treatment of strabismus usually includes the following cases: 1. Strabismus that can be completely corrected by wearing glasses, that is to say, no strabismus in both eyes by wearing glasses. 3, wearing glasses with or without strabismus basically no change in the degree of strabismus, then only surgical treatment of strabismus; 4, sometimes strabismus, sometimes not strabismus, this situation in the majority of patients with internal strabismus can be corrected by wearing glasses, but in patients with external strabismus, wearing glasses can rarely solve the problem, if the observation of patients found that the eye orthophoria If the patient is observed to find that the time of eye alignment is more than the time of strabismus, it can be temporarily observed without surgery; on the contrary, surgery should be considered or checked several times at the hospital, and if stereo vision no longer exists, surgery should be considered. The child mentioned at the beginning of the article recovered the orthoptic position of both eyes after optometry and glasses; after two courses of amblyopia treatment, the visual acuity of both eyes was higher than 0.9 (higher than the amblyopia standard); and there was no side-looking phenomenon when watching TV. If strabismus is detected early and treated in time, the correction effect is mostly satisfactory, and the timing of amblyopia treatment can be grasped in time.