I have been wearing straight line bi-focals for a decade now. I would strongly recommend them in lieu of "progresive lenses" while in the cock-pit. As far as sun glasses go you can get any lense you wish tinted to match Ray Ban colors. I have used G-15 exclusively and have been very happy. Be sure to get "non-polarized" lenses if you are working with EFIS as polarized lenses really play havok with the screens.