Hi Dejibo, This disease just sucks. Really and truly. I'm so sorry to hear about your cognitive and visual problems. These two symptoms I had when I was first diagnosed and they scared me to death. Just a thought-- my neuro told me that Tysabri was very helpful for these two symptoms. I found that to be the case. I couldn't tolerate interferons and even the copaxone made me feel sick as a dog. So the Ty. was the other option. I'm getting close to the 2 year mark and will probably go off but it seems to be the most safe for a year. I'm not a huge promoter (I believe everyone should make their own choices of what's best for them). Just wanted to tell to tell you my experience. Hope you feel better.