SpecFitHow high should glasses sit on your face?
Three things set the height of a frame: your pupils, your brow line, and your cheeks. Get all three to agree and the frame sits right without you thinking about it.
Three checks, one height
Vertical position is easy to get wrong because it looks like a single question with a single answer. It is not. A frame can pass one check and fail another, and the fix for each check is different.
| Check | What right looks like |
|---|---|
| Pupils | At or slightly above the centre of the lens, in the upper third |
| Brow line | Top edge just below the brow on clear glasses; follows or covers the brow on sunglasses |
| Cheeks | Bottom of the frame clears the cheeks, even when you smile |
1. Pupils
Look straight ahead in a mirror. Each pupil should sit at or slightly above the horizontal centre of the lens, roughly in the upper third. This is not a style preference. Lenses are cut so the optical centre lines up with your pupil, and that alignment is what makes the prescription work as intended. If your eyes sit low in the lens, either the frame sits too high on your face or the lens itself is too tall for you.
2. Brow line
On clear glasses, the top edge should sit just below your eyebrows. Close, but never covering them. This is the opposite rule on sunglasses, where the top bar should follow or cover the brow instead, since there is no visible eye above the lens to soften a gap.
A gap between the top of the frame and your brow, wide enough to see plain skin, usually means the frame sits too low. Eyebrows hidden behind the top edge mean it sits too high.
3. Cheeks
The bottom of the frame should clear your cheeks. Smile in the mirror. If the frame lifts or gets pushed up, it sits too low, or the lens is too deep for your face. Frames that rest on the cheeks fog up in the cold, leave marks after a few hours, and get knocked out of place by ordinary facial movement.
What actually sets the height: the nose
The bridge carries the frame's weight, and the bridge is what decides how high or low a frame sits. Narrower nose pads, or a narrower bridge shape, lift the frame. Wider ones lower it. This is why two people can buy the same frame and wear it at two different heights. The frame is the same. The nose is different.
Adjustable nose pads, the kind found on most metal and semi-rimless frames, give an optician about 2 to 3 mm of height adjustment either way. Fixed acetate bridges, moulded into the frame, give very little. If a frame is more than a couple of millimetres off, the fix is usually a different bridge size, not an adjustment. See the bridge number on the size stamp before you order.
Progressives need height more than most
If you wear progressive lenses, get this right before anything else. Fitting height, the distance from your pupil centre down to the bottom of the lens, needs to be about 17 to 18 mm for a standard corridor and about 13 to 14 mm for a short corridor. A frame that sits too low pushes the reading zone away from where your eyes actually land, so the bottom of the lens stops doing its job even though the frame looks fine in the mirror.
The checklist: too high or too low
| Sits too high | Sits too low |
|---|---|
| Brows hidden behind the frame (clear glasses) | Gap between the frame and the brow |
| Eyes sit in the lower half of the lens | Eyes sit near the top edge of the lens |
| Frame lifts off the nose when you raise your eyebrows | Frame rests on the cheeks, or lifts when you smile |
| Nose pads or bridge set too narrow | Nose pads or bridge set too wide, or frame is sliding |
Temples play a part too
Height is not only a nose problem. The temple's bend point should sit just past the top of the ear. A bend that happens before the ear pushes the whole frame forward and down, which drops the height at the front even if the bridge fits correctly. If height still looks off after checking the nose, check where the arm bends next.
Check your face, not a guess. SpecFit's depth camera scan measures your PD, face width, and bridge width in real millimetres, about ±1 mm. Paste a link to any glasses and the app reads the size stamp and scores the fit against your face, free. Rendering the frame on your own photo costs one credit.
Questions
Where should glasses sit on your nose?
High enough that each pupil sits at or slightly above the centre of the lens, low enough that the top edge stays just below your eyebrows without covering them. The bridge and nose pads carry the weight and set that height, so a frame that fits your nose usually lands in the right place on its own.
How do I know if my glasses sit too low?
Look for a gap between the frame and your eyebrows, eyes sitting near the top edge of the lens instead of the centre, or the frame resting on your cheeks. Smile: if the frame lifts, it sits too low or the lens is too deep for your face.
How do I know if my glasses sit too high?
Your eyebrows disappear behind the top of the frame on clear glasses, your eyes sit in the lower half of the lens, or the frame lifts off your nose when you raise your eyebrows. All three point to a bridge or nose pads set too narrow for your nose.
Can an optician adjust how high glasses sit?
Yes, within limits. Adjustable nose pads give about 2 to 3 mm of height adjustment either way. Fixed acetate bridges give very little, so if the frame is far off, the fix is usually a different bridge size, not an adjustment.