Most people find out their glasses don't fit well only after wearing them for months — a red mark on the nose, a headache at the end of the day, constantly pushing them back up. None of that is normal, and none of it requires a new prescription to fix. It's almost always the frame, not the lenses.
Here's what to actually check.
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01
The temple test. Look in a mirror from the side. The arms of the frame should run roughly parallel to the ground, angling down only slightly to hook behind the ear. If they slope down sharply, the frame is too wide for your face and pressing in at the temples — which is usually the real cause of an end-of-day headache, not eye strain.
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02
The nod test. With the glasses on, look straight ahead, then nod your head down and back up without touching the frame. If they slide down your nose even slightly, the nose pads or bridge are too loose. A well-fitted frame stays in place through a full nod.
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03
The eyebrow line. Your eyes should sit roughly in the centre of the lens vertically, not near the bottom. If your eyes are low in the frame, the optical centre of the lens — the point ground exactly to your prescription — isn't lining up with where you're actually looking through it, which causes a subtle blur that's easy to mistake for a wrong prescription.
What we actually adjust in-store
Almost everything above is fixable without buying new glasses. Nose pads can be bent inward or outward. Temple arms can be reheated and reshaped to sit correctly behind the ear. The bridge itself can sometimes be adjusted for width. This is the free adjustment service every branch offers for as long as you own the frame — most visits take under ten minutes, no appointment needed.
If a frame still doesn't sit right after adjustment, that's usually a sign the frame size itself is wrong for your face, not that it needs more tweaking — worth a second opinion before you commit to wearing it daily.