We do a ton of charity quilting and our beloved Ms. Judy can sew anyone of us around the block and then some. She too has macular degeneration and pre existing sight issues. I think the posts have covered most of what she has hit on to keep quilting. She did visit a specialist that suggested the automatic needle threader that is pretty cool. Additionally, it is my absolute pleasure to cut for her. I wish she would let me cut out more of her projects as it really makes a difference too. So my additional suggestion is to find a quilting buddy who can cutout your projects.
Infila Auto Needle Threader
Automatically threads large or thin needles. www.independentliving.com