CJRT, do a search on this board for Optic Neuritis and you'll see much come up. There are a few different eye ailments -- what you're describing as "jumping" might be Nystagmus and that can happen not only in MS. Optic Neuritis can also be caused by a few different things but is VERY closely associated with MS. If an MRI shows lesions, it can be a short road to an MS dx.
Here's an "at home" Optic Neuritis color test.

Pick up something brightly colored and look at it out of one eye at a time. Before I knew I had ON and what it was, I described my vision as kind of dim and "filmy". It wasn't until I got to the eye doctor and she picked up a bottle with a bright orange cap and asked me to look at it one eye at a time that I realized that my color was impaired! Right eye, bright orange...left eye, not so bright!!