I'm so sorry to hear about how you are struggling. Trust me when I say that we all know what you are talking about. My symptoms were very similar to yours: blurry vision, SONSTANT anxiety attacks, brain fog...even numbness/weakness in my hands.
Not saying this to worry you, but be prepared that you may "crash" after the Mirena is removed. I had a crash a couple of weeks after, and then I crashed again four months after. That was when a did a natural detox that gave me my life back. All the information regarding my story and the detox is on my blog: http://www.mylifeaftermirena.blogspot.com.
Please feel free to check it out if you would like.
Getting it out will be your first step to recovery. Please remember that we are all right here for you if you ever need us. Big hugs to you.