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What do the numbers on my frame mean?

Measure frame glasses eyeglasses existing current my

On the inside of the frame, you will see numbers that tell you the frame measurement of your existing frame.

The temple “arm” length is usually written on the inside of one of the temples. The number is usually between 125 and 145, and represents the full temple length (including the bend) in millimeters (mm).

The “eye size” and “nose bridge” measurements are sometimes stamped in that same place, and are either separated with a dash ( - ) or a small box between the numbers. An example is 49-19, which would mean an eye size (widest part of the lens) of 49mm and a nose bridge (also called “DBL” or “distance between lenses”) measurement of 19mm. It is also very common for these to be stamped or engraved on the inside of the nose bridge.

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