Can you go blind from ms?

Can be prevented: As you probably know, a common ms problem is optic neuritis, but if it occurs, high dose IV Methylprednisolone can readily reverse it. Best way to stabilize vision is to use potent ms agent such as tysabri, (natalizumab) gilenya, or tecfedera. Also, enhance protection with vit d, low fat, low salt diets, avoid smoking, do aerobic exercise. In short, art of prevention is the key.

Rare: Ms in a few will affect the optic nerve - sometimes one side alone and occasionally both sides. This usually recovers and can be helped with good treatment. But rarely the nerve may not recover and some degree of visual loss can occur - and sometimes it is substantial. But this is not very common at all.