Unlike Alzheimer's disease, which shrinks the hippocampus causing progressive memory loss, white matter disease is a more diffuse mind-robbing condition that targets small blood vessels deep within the brain's white matter. The disease hardens the tiny arteries, gradually restricting nutrients to white matter -- the connections between brain regions involved in executive abilities such as planning, organizing, problem-solving, and attention.
The eye is a part of the nervous sytem, which is essentially a network of neurons that coordinate actions and transmits signals throughout the body. There are two parts to the â¦ nervous system: central and peripheral.he nervous system. Your eyes are part of your brain. The majority of. your brain surface is light-sensitive.
The visual system includes the optic nerve, the optic tract, the chiasm and the optic radiation. 1  Optic pathway tumors squeeze the visual system. 2  The extent of vision damage depends on two factors: Location of the tumor. 3  The sooner the pressure is removed, the easier it is for vision to be restoredâoften completely.