I have seen a video of a blind quilter sewing on a machine and turning out quilts. She had a friend cut the fabric. Let me see if I can find the video. Please give a her a big hug from me. I have thought about this as my grand mother went blind in her later years. She continued to knit and one of her daughters would on a regular basis fix the stitches that had dropped.
http://www.youtube.com/watch?v=7lfaSmDxVZQ