How to Read your Frames?
If you take a look on the inside of your current pair of you glasses, you may notice 3 sets of numbers. Sometimes it is found on the arms (temple bar) or on the bridge (part that goes over your nose). Those set of numbers, are your frame’s measurements. The first number is your lens width. The second number is the bridge measurement. The third number is the temple bar length.
Sometimes, from normal wear and tear, the numbers have rubbed off. You can measure your current frame to figure out it’s dimensions.
First you would measure the lens width. Lens width is the horizontal width of each lens at it’s widest point. It typically ranges from 40mm-62mm. If you are sporting an aviator, the lens width may be larger than 60mm and that’s ok!
You would then move onto the bridge width. This is the distance between your two lenses. In short, the bridge width is the space where your frames fit against your nose. The size can range from 14mm to 24mm.
Next is the temple (arm) length. This is the length of the temple bar from screw to it’s temple tip. This includes the bend that sits behind your ear. This measurement can range from 120mm to 150mm long.
Lastly, if you are going to be needing a bifocal or progressive lens, you would need to measure the lens height. This is the vertical height of the lenses at the widest point of the lens within the frame. If the lens height is less than 30mm, it is not an ideal frame to use for progressive lenses.