Consecutive exotropia arises after an initial esotropia. People with exotropia or esotropia are wall-eyed or cross-eyed respectively. Secondary MFS is a frequent outcome of surgical treatment of congenital esotropia. The nerve dysfunction induces esotropia, a convergent squint on distance fixation. Most often it results from surgical overcorrection of the initial esotropia. "Congenital esotropia," or "infantile esotropia," is a specific sub-type of primary concomitant esotropia. Botulinum toxins have been used off-label for several pediatric conditions, including infantile esotropia. In esotropia the light lands on the lateral aspect of the cornea. It is the opposite of esotropia and usually involves more severe axis deviation than exophoria. Incomitant esotropias are conditions in which the esotropia varies in size with direction of gaze. Esotropia is a highly prevalent congenital condition. If it moved from out to in, the person has esotropia. Esotropia is a form of strabismus in which one or both eyes turns inward.