01 · LOCAL ADJUSTMENT
Changing one part changes other fitting variables too
Adjusting nose pads can change wearing height and vertex distance.
Opening the temples may reduce side pressure but also change lateral support and slipping.
Changing the behind-ear bend can influence front position and tilt, so fitting variables should be considered as a connected system.
Eyeglass fitting is a connected geometry, so changing one component can alter several wearing parameters. Moving nose pads can change wearing height, vertex distance, and sometimes pantoscopic tilt, while temple changes can alter lateral position and rear support. If the frame feels strange after refitting, reassess the whole position of wear rather than looking only at the last part that was adjusted.
02 · OLD ADAPTATION
You may have adapted to the previous distorted position
If glasses were worn tilted for a long time, that position can begin to feel normal.
Restoring the frame to a proper reference state may initially feel higher, lower or unfamiliar on one side.
However, that does not mean every new discomfort should be dismissed as adaptation.
A wearer can become familiar with a frame that was previously tilted, but that possibility does not prove that new discomfort is normal. First confirm that the frame has actually been returned to a sensible reference alignment and that the lenses remain correctly positioned in front of the eyes. Only after those checks should familiarity with the previous position be considered part of the explanation.
03 · WEARING HEIGHT
Has wearing height changed?
Changing nose-pad or bridge fitting changes where the lenses sit in front of the eyes.
Even single-vision lenses can feel different if centration changes, while progressive lenses are more directly affected by changes in fitting height.
A change in wearing height can directly change the relationship between the eyes and the distance, intermediate, and near zones of a progressive lens. In single-vision lenses, substantial decentration from the intended reference point can also create unwanted prismatic effects. After refitting, recheck left-right height, PD/centration, and the relevant lens reference points when vision has changed.
04 · VERTEX DISTANCE
The lens-to-eye distance may also have changed
Nose-pad or tilt adjustments can change vertex distance and alter visual sensation.
With higher prescriptions, small distance changes may be felt more strongly.
Changing vertex distance is linked to nose-pad position, pantoscopic tilt, eyelash clearance, and cheek clearance rather than being an isolated adjustment. Higher prescriptions can be more sensitive to a large change in vertex distance. For individually optimized lenses, also compare the current position of wear with the product-specific measurements used when the lenses were ordered.
05 · FITTING SEQUENCE
The sequence still matters during refitting
Correcting only the uncomfortable point can miss the rest of the balance.
If the front is distorted and the temples are adjusted first, later changes may simply compensate for the wrong reference.
Refitting should again follow front → nose pads/bridge → width → temple bend.
A reliable refitting sequence starts by restoring the frame itself to a valid reference, then checking nose support and wearing height, overall width, temple path, and ear bends. Finish by viewing the frame from the side as well as the front and by confirming the wearer’s actual visual experience. This reduces the risk of fixing one symptom by forcing another part of the frame to compensate.
SOLUTION GUIDE
Solutions at a glance
Compare wearing height and tilt with the old glasses.
Check vertex distance, tilt and lens position.
Recheck the whole fitting balance.
Recheck fitting and lens position.
GLANOS FITTING CHECK
GLANOS fitting check order
- Front
Restore the frame to a proper reference alignment. - Nose pads / bridge
Check wearing height and vertex distance. - Width
Check side pressure and stability. - Temple bend
Finalize rear support and front position.
CAUTION
Do not automatically return the frame to the old position just because it feels different
If the old frame was already distorted, a correct position can initially feel unfamiliar. But if pain or visual discomfort persists, do not treat it as adaptation alone; recheck fitting and lens position.
GLANOS EYEWEAR
There is a reason glasses feel uncomfortable.
eyewear fitting · refitting · vertex distance · wearing height · pantoscopic tilt · progressive lenses · eyewear adjustment