FRAME SIZE:
M (53/16/135/31.1)
Frame size is usually defined by lens width, bridge width and temple length. These values are always displayed in that order, in millimeters.
Lens width ( 53 / 16 / 135 / 31.1 )
Bridge width ( 53 / 16 / 135 / 31.1 )
Lens
height
( 53 / 16 / 135 / 31.1 )
Frame width 129
As a reference, you may want to check the size of your current eyewear, by looking at the inner side of the temple. Should you see a fourth number at the end, this refers to lens height (i.e. 53/16/135/31.1).
0PR 15PV53 16 135 31.1
Temple width ( 53 / 16 / 135 / 31.1 )