Harmony · Front view · Eyes
Eye Aspect Ratio
The width of the visible eye opening divided by its height, averaged across both eyes.
What is measured
The calculation
Average of each eye’s corner-to-corner width ÷ upper-to-lower eyelid height
Front view / Measurement guide
Follow the measurement
Select a label to focus on its line. Select again to show all measurements.
Why it matters
It separates a relatively elongated eye opening from a rounder one. The ratio concerns the opening between the eyelids, so it can change with expression even when the eye corners stay fixed.
- Lower: relatively rounder or more open eyes.
- Higher: relatively narrower vertical openings for their width.
Where the idea comes from
FaceIQ adaptation
This is a FaceIQ landmark-based description of facial shape. The linked research provides background on facial measurement or perception; it has not directly validated this exact formula or its score. [1]
A worked example
An opening 30 units wide and 10 high has a ratio of 3.0. At a height of 12 with the same width, it becomes 2.5.
Example values explain the calculation. They are not a target range and are not measurements of the schematic above.
Research & further reading
The sources below explain the history or related evidence. FaceIQ’s score weights and reference ranges are model settings; these papers do not collectively validate the scoring system.
[1] Farkas et al. · 2005
International anthropometric study of facial morphology in various ethnic groups/racesDocuments variation in facial dimensions across sampled populations. Descriptive measurements explain variation; they do not establish an attractiveness score.