I had a problem with one pair of bifocals because the line was too high. The optometrist told me that there's no hard rule as to where the line falls, just guidelines. If you get the no line bifocals it's even worse because instead of a line you will have a transition zone where neither prescription is in focus. If someone does a lot of reading they would be better off with more on the bottom, but in the case of an archer this will put the reading prescription close to the point where you look through the peep sight. When I have my glasses made I have them move the bifocal line down to clear up my vision while shooting, I just wouldn't want to try and read a novel with these glasses. One thing that the optometrist suggested to me also, was to bring in an old pair of glasses so I wouldn't have to purchase frames. A set of single vision lenses for these frames would cost about $75 and you don't need the reading part for hunting. In addition if you bring your bow to his office, that he would measure where to put the prescriptions center at full draw so that it falls right at the peep sight.