> For the complete documentation index, see [llms.txt](https://docs.saas.haut.ai/haut.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.saas.haut.ai/haut.ai/haut.ai-features/algorithms/face-skin-analysis-3-0/sagging/lacrimal-grooves.md).

# Lacrimal Grooves

What the Lacrimal Grooves parameter analyzes below the inner corner of the eye, and how to read its scores and grades.

## About Parameter

This parameter analyzes the lacrimal groove — a natural depression that runs from the inner eye corner downward. As a key indicator of facial aging, it helps assess midface volume loss and overall facial aesthetics.

## Features

1. Works with 1 and 3 side facial images.

## Output

1. Score from 1 to 100.
2. Grade from 1 to 5.
3. Algorithm-assigned skin condition tag (Great, Good, Average, Poor).
4. Length of the lacrimal grooves for the left and right eyes.
5. Vector mask for detected features.

## Scores & Grades Description

<table><thead><tr><th width="120.22265625">Score value</th><th width="120.1171875">Grade value</th><th width="359.6015625">Description</th><th>Tags</th></tr></thead><tbody><tr><td>100-90</td><td>1</td><td>No or slightly visible groove</td><td>Great</td></tr><tr><td>89-80</td><td>2</td><td>Slight groove visible from inner eye corner, not reaching mid-lower eyelid</td><td>Good</td></tr><tr><td>50-79</td><td>3</td><td>Moderate groove extending to mid-lower eyelid</td><td>Average</td></tr><tr><td>30-49</td><td>4</td><td>Pronounced groove extending beyond mid-lower eyelid, possibly forming semicircle under eye</td><td>Poor</td></tr><tr><td>&#x3C;30</td><td>5</td><td>Severe groove formation</td><td>Poor</td></tr></tbody></table>

## Algorithm API

{% hint style="warning" %}
API access is available only for <mark style="color:purple;">**Professional**</mark> plan clients
{% endhint %}

See [Lacrimal Grooves](/haut.ai/haut.ai-features/algorithms/face-skin-analysis-3-0/sagging/lacrimal-grooves.md).

***

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{% endhint %}

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