I was at the eye doctor the other day and finally found a set of glasses that my old orange tint clipons fit and over hanged enough on the top to work for me.. Then the tough stuff.. I had single lenses before and lost them.. Even with a flintlock and 9 years the coated plastic lenses never gave me problems or scratched.. Now thier saying poly carbon or whatever, lines, no lines,............. lines are best for beginner bifocal usesrs, the lineless only come in trifocal, etc etc.. :? . What the heck do you guys use?? Im worried about hunting thru a bunch of crap, brush, rocks etc, and the bifocals causing me to fall... Whats my better choices?.. I need bifocals for work reading serial numbers,and tieing knots flyfishing,,,, if im not going to use my magnifying glass all the time.. Is there a single solution for both hunting and work/fishing? dave..