# Pediatric eye movement-based perimetry: progress, pitfalls, and prospects

## TL;DR

Eye movement-based perimetry is a promising method for assessing vision in children, but faces challenges like poor ergonomics and calibration issues that need to be addressed for reliable clinical use.

## Contribution

The paper identifies practical barriers in pediatric eye movement-based perimetry and proposes solutions based on clinical and technological insights.

## Key findings

- Commercially available EMP systems often face poor ergonomic fit and inadequate calibration in children.
- Attention management strategies are lacking, leading to incomplete tests and data loss.
- Collaboration between clinicians, engineers, and scientists is needed to improve EMP for pediatric use.

## Abstract

Eye movement-based perimetry (EMP) is a promising, non-invasive approach for visual field assessment, particularly in pediatric populations where standard automated perimetry often fails. However, completion rates in prior pediatric EMP studies have ranged from 41 to 81%, and reasons for unsuccessful testing are seldom reported.

In this perspective article, we aim to highlight practical barriers and design gaps in EMP systems for children, with a focus on clinical use.

From our clinical experience with testing two commercially available EMP systems in children (21 patients with brain tumors and 19 age-matched controls), we observed recurring challenges, including poor ergonomic fit, inadequate calibration of eye tracker, and insufficient attention management strategies. These issues frequently led to data loss and incomplete tests, underscoring the gap between current technology and pediatric clinical needs. We outline solutions informed by technological development, vision science and clinical ophthalmology.

Pediatric testing experience must inform EMP design to ensure accessibility and reliability. Our observations highlight the need for clinician-engineer-scientist collaboration, with innovations likely to benefit not only children but also adults with similar testing challenges.