Congenital esotropia usually occurs after birth or within a few days after birth. Because parents of children with the disease rarely seek medical treatment during the neonatal period, congenital esotropia is rarely seen clinically. It is more common to find strabismus in the early postnatal period. Because parents of children with the disease often cannot make accurate and objective judgments about the eye position of their infants under one year old, they may mistake the instability of the equality of the binocular visual axes for congenital esotropia. In addition, in infancy, because the nose is not fully developed, there are often epicanthus and pseudo-strabismus, which can easily cause confusion. Some acquired accommodative strabismus can also occur at this time. All of the above can cause confusion in diagnosis.