Organization The Army, as one of the three military departments (Army, Navy and Air Force) reporting to the Department of Defense, is composed of two distinct and equally important components: the active component and the reserve components. The reserve components are the United States Army Reserve and the Army National Guard.
A common cause of this condition is a brain tumor, especially on the frontal lobe, in which force is applied to the skull. Another is an increase in the cerebrospinal fluid which is present between your brain and skull. These are the only causes that would make optic nerve inflammation to be called Papilledema.
Stage 2 papilledema is a circumferential halo of edema on the optic disc. (The optic cup is not obscured in stage 1 or 2 papilledema but may be in higher grades of papilledema.) Stage 3 papilledema is elevation of the optic disc with partial obscuration of one of more segments of the blood vessels at the disc margin. Stage 4 papilledema is characterized by almost complete obscuration of major blood vessels on the optic disc.