Diplopia and acute rectus muscle palsy as symptoms of an infected follicular cyst of a maxillary right third molar: a case report.

Severely impacted third molars have a high risk of developing a dentigerous cyst. Dental cysts in the maxilla can cause acute infection of the maxillary sinus that can involve the orbital cavity. Possible complications of infections of the orbital cavity are eyesight reduction, including blindness, and disseminated infections, including brain abscesses.