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.
An inherited corneal abnormality. About 7% of those with the condition have a family history of keratoconus. An eye injury, i.e., excessive eye rubbing. Keratoconus has been associated with certain eye diseases, such as retinitis pigmentosa, retinopathy of prematurity and vernal keratoconjunctivitis. Systemic diseases, such as Leberâs congenital amaurosis, Ehlers-Danlos Syndrome, Down syndrome, and osteogenesis imperfecta have been associated with keratoconus.