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.
Symptoms of keratoconus. Symptoms of keratoconus generally begin in later teenage years. Some practitioners believe that the symptoms of keratoconus begin once growth stops, between 16 and 21 years of age. The first symptoms of keratoconus could be itching or allergies. This itching causes patients to rub their eyes more frequently and more forcefully.