In children, esotropia, also known as internal strabismus, is a relatively common type of strabismus and is more common in children. The cause of this condition is usually due to congenital dysplasia of the extraocular muscles, which can cause abnormal eye position, and esotropia is usually characterized by an inward slanting of the eyes. For this disease should be corrected as early as possible, the correction method is mainly based on the type of strabismus, internal strabismus can be divided into adjustable internal strabismus and inadjustable internal strabismus, adjustable internal strabismus is usually due to the presence of high refractive error, such as high astigmatism or high hyperopia, so leading to strabismus occurs, this situation can be corrected through the glasses to correct the position of the eye; inadjustable internal strabismus, this situation usually needs surgical correction, which is also the case of inadjustable internal strabismus. This condition can be corrected with glasses; inadjustable esotropia, which generally requires surgery, is a routine ophthalmic procedure.