<unk>  is caused by Chlamydia<unk> tis, serotypes (serovars) A, B, and C. It is spread by direct contact with eye, nose, and throat secretions from affected individuals, or contact with fomites (inanimate objects that carry infectious agents), such as towels and/or washcloths, that have had similar contact with these secretions. Flies can also be a route of mechanical transmission. Untreated, repeated<unk>  infections result in entropion (the inward turning of the eyelids), which may result in blindness due to damage to the cornea. Children are the most susceptible to infection due to their tendency to get dirty easily, but the blinding effects or more severe symptoms are often not felt until adulthood. Blinding endemic<unk>  occurs in areas with poor personal and family hygiene. Many factors are indirectly linked to the presence of<unk>  including lack of water, absence of latrines or toilets, poverty in general, flies, close proximity to cattle, and crowding. The final common pathway, though, seems to be the presence of dirty faces in children, facilitating the frequent exchange of infected ocular discharge from one child's face to another. Most transmission of<unk>  occurs within the family.
Trachoma
Nasal polyp
Orbital emphysema
Isthmicoma
Nasal vestibulitis
Acalvaria
Blepharitis
Tympanosclerosis