Better to consult the ophthalmologist quickly if you have the slightest doubt. Do not hesitate to tell the secretariat that the reason for the consultation is strabismus: it is a relative urgency, but too few parents know it. Even in a very young child who does not know how to speak and therefore express what he sees, the ophthalmologist has a means of verifying whether it is indeed a real strabismus or not. In children of Asian origin, there may be confusion with an epicanthus, so called because it corresponds to a particular shape of the upper eyelid: by masking part of the white of the eye, it gives the illusion that the child is suspicious, when in reality it is not! If there is strabismus, the ophthalmologist explores the fundus, looks for a visual disorder and an associated oculomotor disorder. He also checks whether or not there is an underlying pathology that may explain the strabismus and requiring surgery: for example, a congenital cataract, much more rarely, a retinoblastoma (tumor of the eye).