If you're having problems with your glasses, especially with "lineless bifocals", (progressive lenses) or working at a PC, you should know the following:

Lenses

Computers and Vision

My Own Recommendations

I am not any kind of medical professional. This just is information I've learned over 5 years of bad experiences. I'm writing it in hopes that someone else won't have to go through what I did (or at least for as long). Here are links to articles I found that I think might be helpful to other people.