The printed DBL is only a reference value. It does not describe the full width, height and curvature of the bridge that actually contacts the nose, so real contact and wearing height matter more.
01 · WIDTH
A plastic bridge that is too narrow can create pressure
If the internal bridge shape is too narrow for the nose or contacts in the wrong place, pressure can concentrate on the sides or upper part of the nose.
A small printed DBL does not necessarily mean the real contact width is narrow.
The internal bridge height, curvature and contact position need to be checked together.
02 · TOO WIDE
Insufficient support can make the frame sit low or move
If the bridge does not support the nose securely, the frame can sit lower or shift repeatedly.
Rather than assuming the printed bridge number is simply too wide, also check actual contact area, nose slope, frame load and temple fit.
03 · SHAPE
The same DBL can still have very different internal bridge geometry
In plastic frames, internal curvature, height, depth and thickness strongly influence nose fit.
Two frames both marked 20 mm DBL can contact the nose at very different positions and over very different areas.
That is why the bridge number on an old frame is a useful reference, but not a value to copy blindly.
04 · METAL FRAME
Metal frames with separate nose pads offer relatively more adjustment
Metal frames with independent pads can adjust pad spacing, height and angle to suit the wearer.
But pad-arm length and position and the fixed bridge geometry still differ among frames, so adjustment range is not unlimited.
A metal frame cannot automatically be fitted to every nose.
05 · TRY ON
Judge the actual wearing position and pressure
The frame should sit at an appropriate height, avoid concentrated nose pressure and remain reasonably stable during normal movement.
Bridge selection is ultimately based on actual nose contact and the balance of the whole frame rather than the printed number alone.
SOLUTION GUIDE
Solutions at a glance
Check the internal bridge shape and contact point.
Check bridge support and overall fitting together.
Compare internal bridge height and curvature rather than DBL alone.
Check the adjustment limits of the pad arms and fixed bridge.
GLANOS FITTING CHECK
GLANOS fitting check order
- Front
Confirm the frame itself is aligned. - Nose pads / bridge
Judge actual contact rather than the DBL number. - Width
Make sure a bridge problem is not being compensated with side pressure. - Temple bend
Do not hide a front-fit problem by tightening behind the ears.
CAUTION
Do not choose a new frame by copying the old bridge number alone
Even with the same DBL, models can differ in internal bridge height, curvature, thickness and contact position. How the bridge actually supports the nose matters more.
GLANOS EYEWEAR
There is a reason glasses feel uncomfortable.
bridge width · bridge size · DBL · nose pads · plastic frames · metal frames · frame selection