No, I haven't. I educate myself about lens materials and choices online but then I get my prescriptions and glasses at the Berkeley School of Optometry brick and mortar. You're asking about fitting and I think opticians are really good at that. Berkeley is. I'm talking about educating yourself on choices.

This is another online site with a lot of information:

http://www.visio-rx.com/vision-topics/lenses/polycarbonate-v...