Model NO: EA4045 512287 51
Size: 51-19-145 mm
Glasses are measured in the size of Lens-Bridge-Earpiece.
Lens stands for the actual glasses width and is available in a span, usually between 55-64.
Jetty is the distance where the glasses rest on the nose.
Earpiece is the scale length. All dimensions are in mm.
To know the size of the arches you have, place a ruler in front of your face and measure the distance between the temples.
The ruler should not bend but should be straight.
115 mm: 47 mm wide lenses
121 mm: 50 mm wide lenses
127 mm: 52 mm wide lenses
130 mm: 54 wide lenses
135 mm: 55 mm wide lenses
140 mm: 57 mm wide lenses
146 mm: 58 wide lenses
152 mm: 61 mm wide lenses