Frame size is determined by the three key measurements found inside the frame arm: lens width (from 31-60mm), bridge width (from 12-31mm), and arm length (from 115-155mm).
Your lens height (mm)
37
Lens height is essential for multifocal prescriptions, such as Progressives, which require a minimum measurement of 28-30mm. They are also recommended for Rx sunglasses.
The Doherty by Joseph Marc is a road warrior. This rectangular acetate frame has sturdy metal arms and a molded saddle bridge. The spring-hinged temples give you a comfortable fit while you're flexing.