01 · REFERENCE

The front is the fitting reference

The rims, bridge and hinges are all connected through the front.

If the front is twisted, nose support and temple direction are affected too, making later adjustments difficult to judge accurately.

A reference position does not mean making the frame perfectly level and symmetric relative to every face. First separate true frame distortion from the wearer’s anatomical asymmetry, establish a sound structural baseline, and then fit for differences in nose and ear height.

02 · FRAME TWIST

Small twists can feel large when worn

A frame can look nearly normal on the bench yet place one lens closer to the face or higher on the wearer.

Thin metal frames can change with impact and repeated external force, while acetate fronts can change with heat and pressure.

A twisted front can place the two lens planes in different orientations, changing vertex distance or lens tilt from side to side. After lenses are mounted, lens thickness and mounting tension can also influence frame shape, so front alignment should be checked again on the finished eyewear.

03 · NOSE FIT

Nose fitting also depends on a straight front

If the front is tilted, one nose pad or one side of a plastic bridge may appear to press more strongly.

Treating that only as a nose problem can compensate for the frame twist instead of correcting it.

Greater pressure from one nose pad may be a pad problem, but it can also be the result of front rotation, bridge position or unequal temple forces. Adjusting only the painful contact point can therefore compensate for a different upstream cause rather than correct it.

04 · TEMPLE BALANCE

Temple pressure is also affected by the front

If the frame is rotated, the temples may travel along the head at different directions and pressures.

Treating that only as a width problem can make left-right balance more complicated.

05 · LENS POSITION

Lens position changes too

When the frame tilts or rotates, the relationship between the eyes and lens centers, wearing height and vertex distance can change.

Stable wearing position is especially important with progressive and high-prescription lenses.

With higher powers and progressive lenses, the goal is not perfect geometric symmetry by itself but reproducing the lens position that was measured and intended. Establish the frame baseline, fit it to the wearer, and preserve that condition through measurement, edging and final dispensing.

SOLUTION GUIDE

Key points at a glance

Are the two rims stable relative to each other?

Check vertical and front-back twist.

Is one side displaced forward or backward?

Check front twist.

Are the hinges and endpieces balanced?

Check the starting direction of the temples.

Are the lenses at very different distances from the face?

Check fore-aft alignment.

GLANOS FITTING CHECK

GLANOS fitting check order

  1. Front
    Confirm the frame is in a proper reference state.
  2. Nose pads / bridge
    Fit nose contact from that reference.
  3. Width
    Check temple direction and pressure.
  4. Temple bend
    Finalize stability for the wearer’s ears.

CAUTION

Facial asymmetry does not mean the frame itself should simply be twisted

Facial asymmetry is accommodated in the final wearing fit through nose support, temple path and ear position. Start by confirming that the frame itself has a sound reference alignment.

GLANOS EYEWEAR

There is a reason glasses feel uncomfortable.

CATEGORYFitting principles
TOPICFront alignment
FRAMEAll frame types
TAGSGLANOS EYEWEAR

eyewear fitting · front alignment · frame twist · frame level · lens position · temple fitting