I took b-12 thinking my numbness was just that..a deficiency. Nope.. lol. All of my symptoms are always, or always have been bi-lateral, but my right eye hasn't recovered the same as my left. They both went out at once, as well as my legs and hands. Most of the folks I spoke to with MS were always on one side, and it had me wondering if I had ms or something else. Although I'm being tested for Devics Syndrome just in case, my neurologist assured me that MS can indeed be bi-lateral.