01 · TEMPLE START
Hinge position affects where the temple starts
If the hinge sits farther outward on the front, the temple start can also be farther outward.
If the hinge is more inward or the endpiece is shorter, the temple may begin farther inward even with the same lens size.
Effective wearing width is determined by hinge position together with endpiece geometry and temple starting angle.
The hinge is not only a connector; it is the pivot where the temple begins to rotate and a point through which load is transferred. Even with similar front width, a hinge that starts farther inward or outward can change the initial temple path and clearance at the temples.
02 · ENDPIECE
The endpiece must be considered too
A long endpiece from the outer lens rim to the hinge can increase the external front width and move the temple start outward.
This is one reason printed lens size alone does not predict wearing width.
03 · TEMPLE ANGLE
The direction leaving the hinge also matters
Even with a suitable hinge position, temples that angle too far inward can create temple pressure.
If they angle too far outward, side support may feel loose.
Hinge position, endpiece geometry and temple starting angle should be assessed as one structure.
Temple direction should not be judged as a hinge-angle problem in isolation. Front width and endpiece direction need to work together; bending only near the hinge to compensate for a narrow frame can add torsion at the joint or create unequal side pressure.
04 · DESIGN
Hinge construction varies greatly by frame design
Thick acetate, thin metal, rimless and semi-rimless frames connect the front and temples in different ways.
Even hinges that appear to sit in similar locations can behave differently because of how they are mounted and how the endpiece is built.
05 · FITTING RANGE
Adjustment range also depends on hinge construction
Some frames allow relatively easy correction of endpiece or temple direction, while others have limited adjustment because of material or hinge design.
It is worth considering both wearing width and adjustment range when selecting a frame.
Before adjustment, compare whether the front is twisted, whether both hinges have similar height and opening angle, and whether temple direction and play are symmetrical. This helps separate frame distortion from a basic sizing problem so only the necessary area is adjusted.
SOLUTION GUIDE
Solutions at a glance
Check whether it suits the wearer’s width.
Inspect the structure between lens rim and hinge.
Check for excessive inward pressure or outward looseness.
Check that one side does not start in a different direction.
Make the final judgment from the wearing result.
GLANOS FITTING CHECK
GLANOS fitting check order
- Front
Check alignment including hinges and endpieces. - Nose pads / bridge
Establish the basic wearing position. - Width
Check temple direction and pressure from the hinge outward. - Temple bend
Finalize the fit behind the ears.
CAUTION
Do not judge real frame width by lens size alone
Hinges and endpieces sit outside the lens openings and determine where the temples begin, so two frames with the same lens size can fit very differently.
GLANOS EYEWEAR
There is a reason glasses feel uncomfortable.
eyewear hinge · endpiece · frame width · temple fitting · glasses size · eyewear fitting