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.
Corneal infection, inflammation or abrasion can cause acute vision loss. Recurrent corneal erosion is a common cause of sudden pain and vision loss (figure 2). Patients should be questioned about contact lens use and previous ocular injuries. Consider corneal hydrops in patients who have a history of keratoconus.