# An Eye Movement Monitoring Tool: Towards a Non-Invasive Device for Amblyopia Treatment

## TL;DR

A new non-invasive device tracks eye movements to help manage amblyopia in children, showing promise for improving therapy engagement.

## Contribution

The study introduces a gaze-controlled device for monitoring and supporting amblyopia treatment through interactive eye movement tracking.

## Key findings

- The device achieved a System Usability Scale score of 75, indicating good usability in adult testing.
- Preliminary tests showed increased eye displacement during monocular sessions in adults with amblyopia.
- The device generates visual reports with displacement metrics and elliptical movement graphs for monitoring progress.

## Abstract

Amblyopia, commonly affecting children aged 0–6 years, results from disrupted visual processing during early development and often leads to reduced visual acuity in one eye. This study presents the development and preliminary usability assessment of a non-invasive ocular monitoring device designed to support oculomotor engagement and therapy adherence in amblyopia management. The system incorporates an interactive maze-navigation task controlled via gaze direction, implemented during monocular and binocular sessions. The device tracks lateral and anteroposterior eye movements and generates visual reports, including displacement metrics and elliptical movement graphs. Usability testing was conducted with a non-probabilistic adult sample (n = 15), including individuals with and without amblyopia. The System Usability Scale (SUS) yielded an average score of 75, indicating good usability. Preliminary tests with two adults diagnosed with amblyopia suggested increased eye displacement during monocular sessions, potentially reflecting enhanced engagement rather than direct therapeutic improvement. This feasibility study demonstrates the device’s potential as a supportive, gaze-controlled platform for visual engagement monitoring in amblyopia rehabilitation. Future clinical studies involving pediatric populations and integration of visual stimuli modulation are recommended to evaluate therapeutic efficacy and adaptability for early intervention.