i went to the eye doctor yesterday and he recommended bi focals instead of regular glasses.so ama look for sum today but i want to know,can i pick whetever kind of frames i guess and have them as bi focals.i'm asking cause the doctor said there is a difference between them and i don't want to get sum goofy bi focals.i'm hoping i can pick any type of frames.i particularly want the glasses without a rim around the lenses.