# Eye Protrusion

Harmony · Side view · Facial Profile · https://www.faceiqlabs.com/support/harmony/eye-protrusion

The horizontal position of the corneal apex relative to the lower-eyelid landmark.

> Supporting measurement: it currently has no weight in the Harmony score and is hidden in standard results.

## What is measured

Calculation: (Corneal-apex x − lower-eyelid x) × photo scale

Nasion means the nasal root, subnasale the nose base, and pogonion the most forward chin point. Frankfort refers to the direction from the ear-opening landmark to the lower orbital landmark.

## Why it matters

This compares the eye surface with the nearby eyelid contour. It is distinct from Orbital Vector, which uses the lower orbital reference rather than the lower eyelid.

- Negative: the eye front lies behind the lower-eyelid reference.
- Positive: the eye front lies ahead of the lower-eyelid reference.

## Where the idea comes from

Evidence: FaceIQ adaptation. This is a FaceIQ photographic construction. Clinical profile analysis provides context, but the cited work does not validate this exact landmark formula or its scoring range.

## A worked example

An eye front 5 units ahead of the eyelid reference at 0.2 estimated mm per unit gives +1 mm.

Example values explain the calculation. They are not a target range.

## How to read your result

This supporting measurement has no Harmony score weight and is hidden in standard results. It is not a clinical measurement of eye protrusion.

Millimeters are approximate: FaceIQ scales the photo using an assumed 190 mm hairline-to-chin height, so these are estimates, not calibrated physical measurements.

## Research & further reading

These sources explain the history or related evidence. FaceIQ’s score weights and reference ranges are model settings; the papers do not collectively validate the scoring system.

- Farkas et al. (2005). [International anthropometric study of facial morphology in various ethnic groups/races](https://pubmed.ncbi.nlm.nih.gov/16077306/). Documents variation in facial dimensions across sampled populations. Descriptive measurements explain variation; they do not establish an attractiveness score.

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Source: https://www.faceiqlabs.com/support/harmony/eye-protrusion · FaceIQ Labs overview for AI assistants: https://www.faceiqlabs.com/llms.txt