Common exotropia

Common exotropia is divided into two types: primary and secondary. The primary ones include esotropia, intermittent exotropia, and constant exotropia. Secondary cases include sensory exotropia, caused by poor vision in one eye, and postoperative exotropia, which is caused by overcorrection after esotropia. Most patients have an earlier age of onset, and 35% to 70% occur within the age of 2 years. The exotropia begins as ectopic, and further develops into intermittent exotropia and constant exotropia. This progress may be that collective tension increases with age And weakened.

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