Asked by: Amane Gruenbaummedical health eye and vision conditions
What are the 3 numbers on my glasses?
Last Updated: 11th April, 2020
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Similarly, what do the 3 numbers on glasses mean?
All three of these measurements are specified inmillimeters (mm). For example, let's say you see these threenumbers on the inside of your frames: 48-19-140. The firstnumber — the eye size — represents the horizontal widthof the lenses.
Beside above, how do I know my glasses Size? Glasses Frame Measurements – Finding The RightFit
- The lens diameter is the width of the lens (in mm), measuredfrom the bridge. It can be a matter of personal choice, but it'salso determined by your frame style.
- The bridge width is the gap above your nose between thelenses.
- The length of the side is usually one of three standards– 135, 140 or 145mm.
People also ask, what do the numbers on my glasses arm mean?
The numbers beneath the frames reflect the SIZEMEASUREMENTS in millimeters (mm). THE FIRST NUMBER (ex.54) =the width of the lenses. THE SECOND NUMBER (ex.15) = thedistance between the lenses. THE THIRD NUMBER (ex.140) = thelength of the temple arm including the portion going behindthe ear.
Is your PD written on your glasses?
Pupillary Distance (PD) Don't worry if your glasses prescription doesn'tinclude your PD, we can show you how to measure it byyourself. PD, or pupillary distance, refers to thedistance in millimeters between the center of one pupil tothe center of the other. *Note that theaverage PD is between 57 and 65mm.