Monster, I hope things get better for you soon. Most of your concerns are about what you do for other people, and I admire you for that.
I have a vague recollection that there are eyeglasses that can help fill in your field loss, but my research has come up blank. You have a resource close by, which is bound to be more expert that I am. I would visit the University of Michigan Kellogg Eye Center Low Vision Clinic.
http://www.kellogg.umich.edu/lowvision/index.html
Be well.