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Measurement of Fusion Control with Eye Tracking Device in Intermittent Exotropia.

Dong Hyun Kim1, Hee Kyung Yang1, Sang Beom Han2

  • 1Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam 13620, Republic of Korea.

Diagnostics (Basel, Switzerland)
|February 13, 2025
PubMed
Summary
This summary is machine-generated.

An automated eye tracking method effectively quantifies fusion control in intermittent exotropia (IXT) patients. This technology shows potential for improved functional assessments of IXT.

Keywords:
eye tracking devicefusion controlintermittent exotropia

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Area of Science:

  • Ophthalmology
  • Biomedical Engineering
  • Vision Science

Background:

  • Intermittent exotropia (IXT) requires accurate quantification of fusion control.
  • Current methods for assessing fusion control may lack automation and efficiency.

Purpose of the Study:

  • To develop and validate an automated eye tracking method for quantifying fusion control in IXT patients.
  • To compare the performance of the automated method with established clinical scales.

Main Methods:

  • Fifty subjects (IXT group and control group) fixated on visual targets presented on an LCD monitor.
  • Fixation disparity (FD) was measured using a novel eye tracking device.
  • FD scores were correlated with the Newcastle Control Score (NCS) and Mayo Clinic office-based scale (OCS).
  • Test-retest reliability of the eye tracking method was assessed.

Main Results:

  • IXT group FD scores positively correlated with NCS and OCS scores across different visual tasks.
  • The eye tracking method demonstrated fair to good test-retest reliability (ICC = 0.633–0.697).

Conclusions:

  • The developed eye tracking device offers a potential automated solution for measuring fusion control in IXT.
  • This technology may aid in the functional assessment and management of intermittent exotropia.