What Causes Blurry Vision, Disorientation, Severe Chest And Neck Pain?

Hi, I had a cervical spine fusion from C-5 through C-7. Ever since , I have had severe chest pain,blurry vision, disorientation, and severe neck pain. I get worse as each day passes. The neurosurgeon who did the surgery said that it just didn t work. The plate he put in my neck is at an extreme angle. Can you help me? I am on disability from this, and cannot afford to pay for an answer.