The parents found that many of their children were “squinting” and asked for treatment. The doctor ruled out strabismus after examination, but the parents refused to believe it because they saw that their children had obvious strabismus, so how could they say that they were not strabismic? Is it because the doctor did not check carefully? In cases like this where there is a strabismus in appearance, but in reality there is no strabismus and the eye position is normal, it is a pseudostrabismus and does not require treatment. Common pseudostrabismus has pseudostrabismus and pseudostrabismus. The causes of pseudostrabismus are: 1. Intermittent internal strabismus in infants. It occurs mainly in infants within 4 months of birth, when both eyes look at near objects, causing both eyes to converge and intermittent internal strabismus occurs. 2.Internal strabismus. This condition is most easily mistaken for internal strabismus, and is the most common type of pseudostrabismus. It is due to the fact that the internal redundant skin of the eye covers the internal redundant part of the eye, and in severe cases, it can cover part of the sclera, so that the sclera on the nasal side is less exposed than on the temporal side, and the nasal root of the infant is too wide, which gives a feeling of internal strabismus (opposite eye) from the appearance. When the child’s eye is turned to the left or right, the inwardly turned eye appears more obvious. The way to identify this is to pinch up the skin at the root of the child’s nose to expose more of the sclera on the side of the nose, and the “internal strabismus” will disappear. In addition, you can also use the corneal reflection method, that is, use a flashlight light between the two eyes of the child, observe whether the light shadow in the middle of the cornea; or use the method of alternately covering one eye to check the eye position to identify. 3, the pupil distance is too small. When the orbital distance and pupillary distance between the two eyes are too small, it will give the impression of internal strabismus. Pseudostrabismus mainly has a pupil distance that is too large, which can cause a sense of exotropia. Pseudostrabismus is often confused with true strabismus and cannot be judged as pseudostrabismus at a glance. Even experienced clinicians have to go through repeated examinations before they can judge it correctly.