Executive Bifocal Upgrade

The executive bifocal has a visible line all the way across the lens, with the reading portion below the line and the distance portion above the line.  The executive bifocal is also known as a "Franklin Bifocal", after Benjamin Frankllin who popularized that model.  Franklin was alo credited with the invention of the bifocal itself, which began as an executive style, and then become more popular in the flat top 28 style that we mostly see today.  The executive bifocal is a very easy lens to use, because both the reading and distance vision areas are large and easy to find.  However, the executive bifocal also has the most visible line in the lens, and people that would like to minimize that line choose the flat top 28 or flat top 35 lens styles.