Ya know, Meghan, this might not work,b ut it is a thought. Granted, I don't solder anything, or have any electrical experience.
Last year when I saw my optometrist for my regular eye exam--she is a low vision specialist as well, I needed a new pair of reading glasses as well as contacts. Now my reading prescription is really high--like a +12. I laughed and made some comment about that must be why the reading glasses you buy at Walgreens don't do squat for me!! She said that of course they wouldn't be powerful enough for super close work like reading, but in the future, as I get even older, those over the counter ones might be useful with my contacts for other tasks like chopping vegetables and such--small taks but not something you really want at the very tip of your nose, which is where things are with the +12 redding glasses!!
Now, whether you would need a + or a - pair of lenses depends on whether you are farsightted or nearsighted, I think!! I believe + is for far and - is for near. I think they usually only go upto about a 3 poser or so at the drugstore. It would be an inexpensive experiment, anyways. And your hands would be free!
Too bad the tip of the soldering gun isn't flourescent lime green or something so you could see it better!!
I admire your skills! I wish I had a little more experience with tools and electrical stuff so I could do more home repairs than I already do!
Good luck!'
Joni