Personally, I found high-powered reading glasses to be really helpful for soldering. They're cheap, available at any dollar store, and much more comfortable to use than visors.
I'll give them a try. Also while on the subject, I'm mildly nearsighted and find when I'm working on some kinds of tools, taking off my glasses and wearing non prescription safety glasses is just right.
If you're mildly nearsighted, you'll probably want low-power reading glasses then (in the +1 to +2 range). Bring a circuit board with you when shopping for glasses and see which power works for you. High-power (+5) glasses will probably be too much. Higher-power magnification gives you more zoom, but at the expense of field-of-view, and can just be annoying.
