African Americans in the United States Army. Timeline. Throughout Americaâs history, from the Battle of Lexington to the Battle for Fallujah, black Soldiers have honorably answered the call to duty, serving with great valor and distinction in Americaâs armed forces.
Trachoma. Trachoma is the worldâs leading cause of preventable blindness of infectious origin (1) . Caused by the bacterium Chlamydia trachomatis, trachoma is easily spread through direct personal contact, shared towels and cloths, and flies that have come in contact with the eyes or nose of an infected person.f left untreated, repeated trachoma infections can cause severe scarring of the inside of the eyelid and can cause the eyelashes to scratch the cornea (trichiasis). In addition to causing pain, trichiasis permanently damages the cornea and can lead to irreversible blindness.
â Tracheal stenosis â Tracheal stenosis can be caused by processes such as scarring from endotracheal intubation, prior tracheostomy, granulomatosis with polyangiitis (Wegenerâs), tracheobronchopathia osteochondroplastica, gastroesophageal reflux disease with aspiration, and cicatricial pemphigoid.