What do the frame measurements mean?
There are three numbers 50 □18 – 140 , the first number is the diameter of the lens from the bottom left corner to the top right hand corner, the second is the width of the bridge across the nose and the third is the length of the arm, all in millimeters. This tells you that the lens diameter is 50mm, the nose bridge gap is 18mm and that the arm length is 140mm.
The easiest way to find the right frame size that will fit comfortably, is to get the dimensions from a current pair of glasses you already own. On one of the arms you will usually find three measurements, the first two separated by a rectangle. The Lens Diameter is a matter of choice. Additionally, as most of our frames come with spring hinges, the fit in terms of width will naturally adjust within reason. The other two measurements (Bridge Width and Arm Length) determine the fit. They do not need to be exact, but the closer they are to your existing pair, the more likely your new glasses are to be a comfortable fit.
The best way to get the right frame size is to look at the dimensions from a pair of glasses you currently own. They do not need to be exact, but the closer they are the more likely your new glasses will be equally comfortable. On the frame itself you will usually find three measurements, the first two are separated by a square or rectangle.
