Ã Basal body- anchors the flagellum to the cell wall and plasma membrane. Ã Hook- anchors the flagellum to the cell wall. Ã Filament- outermost region on the flagellum, composed of the protein flagellin. Ã *flagellum is made by flagelly :)
Keratoconus does not make people go blind. However the changes to the cornea can make it impossible for the eye to focus without eyeglasess or contact lenses. Keratoconus can be dangerous if laser vision correction surgery (LASIK or PRK) is performed on the eye.
The disease is transmitted by the Chlamydia trachomatis bacterium. It can be serious but it is easily cured if detected in time. It is also, and possibly more importantly, the biggest preventable cause of blindness in the world. Blindness occurs as a complication of trachoma (chlamydia conjunctivitis).