This is what people should understand. For example, many people stick out their tongues when cutting a piece of bread. This is a stim that is not considered inappropriate. This may result in amblyopia, strabismus, or the use of one eye for far viewing and one eye for near viewing. These are all natural adaptations to viewing the world singularly and enable interaction with the world in a simplified or reduced fashion.
Some people have surgery to correct strabismus.
This does not seem to be a 'healthy' way to realign the eyes given that vision also involves learning. Surgery is the structural way to deal with strabismus. The literature suggests that surgery is a cosmetic cure for strabismus, but it is not a functional cure. I guess it depends on what you are trying to accomplish. Many people are looking for a cosmetic cure because they can still function moderately well.