What is eye to brow distance?

The vertical distance between the mid-pupil upper lash line and the lowest point of the brow directly above it, expressed as a ratio to the height of the eye opening itself.

How Facemap measures eye to brow distance

The mesh places landmarks along the upper lid margin and the lower brow border in three dimensions. Facemap takes the vertical separation at the mid-pupil column and divides it by your own eye height, so the result stays comparable regardless of how close you are to the camera.

What the typical range looks like

There is no single correct gap. A smaller ratio is typical of hooded or deep-set eyes, where the brow sits close to the lid, and a larger ratio is typical of an open eyelid with more visible lid space. Both are common structural variants rather than a defect.

How to read your result

Read this measurement alongside canthal tilt and eye aspect ratio. A low eye to brow ratio combined with a downward canthal tilt tends to explain a heavier-lidded impression more fully than either figure alone.

The eye to brow distance formula: how we calculate it

Vertical brow clearance, normalised to eye width. Landmark numbers are MediaPipe Face Landmarker indices, and every distance is normalised to your own face so camera distance and image size cancel out.

mean( |y(105) - y(159)|, |y(334) - y(386)| ) / eye width

Landmarks used

105, 159, 334, 386

Reference target

0.60 eye widths

Tolerance band

0.30

Your reading is compared with that published reference on a Gaussian match curve: score = round( 100 x exp( -0.5 x ( (reading - target) / tolerance )^2 ) ), clamped to 1 to 99. Basis for the reference value: aesthetic surgery references for brow position over the orbital rim. The headline Attractiveness Score works differently: all readings are corrected for head angle and expression, weighted by confidence and mapped onto a 1 to 100 scale by a model calibrated against a published research set of more than Facemap scans.

Read the full Facemap methodology, including how the 22 measurement categories combine into your Attractiveness Score.

Eye to brow distance reference table

Eye to brow ratio bands and how each one reads.

• Above 0.55High

  Substantial lid space, brow sits well clear of the eye

• 0.40 to 0.55Moderate

  The most commonly measured band

• 0.25 to 0.39Low

  Reduced lid space, brow sits close to the eye

• Below 0.25Very low

  Minimal visible lid, consistent with hooding

What causes a low eye to brow distance?

A tight gap between lash line and brow is mostly a matter of bone structure and soft tissue, established well before adulthood, though a few factors shift the visible reading.

• /Orbital bone depth and brow bone projection
• /Amount of upper eyelid skin and fat pad volume
• /Brow height and arch position
• /Age-related skin laxity, which can lower the effective ratio
• /Camera angle, corrected for by the scan's landmark model

Eye to brow distance and hooded eyes

Hooded eyes describe a low eye to brow distance where the lid crease is partly or fully covered when the eye is open. It is a structural description, not a flaw, and it is extremely common. This scan gives you the ratio directly instead of relying on a subjective label.

Reading this measurement alongside brow symmetry

A difference in eye to brow distance between your two sides is worth checking against your brow symmetry score. Small side to side differences are normal, and separating a genuine structural gap from a temporary one, such as swelling or an asymmetric brow raise, needs both readings together.

The eye to brow distance formula, step by step

The eye to brow distance calculator turns two raw landmark measurements on your face into a single comparable ratio using a fixed formula: brow apex to upper lid distance, divided by eye height.

• /Find the brow apex, the lowest point of the brow directly above the mid-pupil column
• /Measure the vertical distance from that apex down to the upper lid margin
• /Measure your eye height, the vertical opening of the eye at its widest point
• /Divide the brow to lid distance by the eye height to get the ratio
• /Compare that ratio against the reference bands to read your result