Not much. It is not very likely.
Demyelinating nerves. Ms is a demylinating disease. Think of it as the mylin is to the nerve as the insulating plastic to wires. When mylin is lost from the nerve cells, then the cells can not conduct their message. Ms happens as blotches in the brain, spine, and optic nerves. Depending on location it can be more or less devastating.
Multiple sclerosis. Multiple sclerosis is an autoimmune disease resulting in destruction of the covering (myelin sheaths) around nervous tissue (nerves and brain). It affects the optic nerves and vision through this destruction and can cause optic neuritis, decreased vision, visual field defects, color vision abnormalities, and other problems.