# Nasal Width-to-Height Ratio

Harmony · Side view · Nose · https://www.faceiqlabs.com/support/harmony/nasal-w-to-h-ratio

Side-view horizontal nose reach relative to the vertical distance from eye front to nose tip.

## What is measured

Calculation: |Tip x − subalare x| ÷ |corneal-apex y − tip y|

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 nose’s horizontal reach with a vertical eye-to-tip reference. It differs from the frontal nasal width and from the constructed length used for Nasal Projection.

- Lower: less horizontal reach relative to eye-to-tip height.
- Higher: more horizontal reach relative to that height.

## 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

A 30-unit horizontal reach and 40-unit vertical separation give 0.75.

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

## How to read your result

“Width” here is profile reach, not nostril-to-nostril width. The eye-front landmark sets the top of the height reference.

## 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.

- Tavakoli et al. (2023). [Ideal Nasal Preferences: A Quantitative Investigation with 3D Imaging in the Iranian Population](https://pubmed.ncbi.nlm.nih.gov/37564715/). Asked 203 volunteers to rate edited nose features on one male and one female model. Supports studying angles and projection together, with limits from the sampled faces and raters.

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Source: https://www.faceiqlabs.com/support/harmony/nasal-w-to-h-ratio · FaceIQ Labs overview for AI assistants: https://www.faceiqlabs.com/llms.txt