I have read in some of the MS literature that many people have these headaches behind there eyes as one of their initial symptoms. They can also affect your vision. But it is temporary from what I understand.
Now, there will be many more people who will be much more knowledgeable about this.

I have never experienced that type of headaches. I have had headaches since a teen, but not at that location.

Hope your pain eases up and passes very soon!

PS... You might google Optic Neuritis. I think that is the term I was trying to come up with. Here is one link but I'm sure there are many others.
http://www.bing.com/health/article/m...iple+sclerosis