Thanks Paul. I think the drug store reading glasses may be worth another try. Maybe 5 years ago, I did try shooting with reading glasses on, and I can't recall the specific camera or result, other than the dealy in switching glasses. Most of my photography is "walking around on the streets and taking pictures I think will look interesting." (Carefull not to EVER say, "street photography" for fear of being mocked by the elite HCB purists). As such, fishing for a different set of glasses was a bit of a hassle. But for set shots, it was probably ok.
I don't really consider myself "low vision." Just a guy who has common refraction and astigmatism problems, wears glasses, and has had a lot of cameras with dull, dim, hard to see focus screens! Gotta say though, you guys are offering some great ideas.