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Updated: Feb 8, 2026

How to Build a Dichoptic Presentation System That Includes an Eye Tracker
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A holographic waveguide based eye tracker.

Changgeng Liu1, Beatrice Pazzucconi1, Juan Liu2

  • 1Department of Bioengineering, University of Illinois at Chicago, Chicago, IL, 60607, USA.

Proceedings of Spie--The International Society for Optical Engineering
|July 6, 2018
PubMed
Summary
This summary is machine-generated.

Holographic waveguide technology shows feasibility for developing wearable eye trackers. This novel system captures eye images, enabling precise eye movement monitoring for potential diagnosis of oculomotor disorders.

Keywords:
Eye TrackerHolographic WaveguideOculomotor Disorder

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Area of Science:

  • Optics and Photonics
  • Biomedical Engineering
  • Ophthalmology

Background:

  • Accurate eye tracking is crucial for diagnosing oculomotor disorders.
  • Existing eye tracking technologies often face limitations in wearability and real-world application.
  • Holographic optical elements offer potential for compact and see-through optical systems.

Purpose of the Study:

  • To demonstrate the feasibility of using a holographic waveguide for eye tracking.
  • To develop and validate a prototype eye tracking system based on holographic waveguide technology.
  • To assess the performance and repeatability of the developed eye tracking prototype.

Main Methods:

  • A custom-built holographic waveguide with integrated in- and out-couplers was fabricated.
  • The waveguide captured anterior eye segment images and guided them to a processing unit.
  • Eye position was computed using the vector between the pupil center (PC) and corneal reflex (CR).
  • A prosthetic eye model was used for prototype validation.

Main Results:

  • The prototype demonstrated a linear relationship between angular eye position and the PC/CR vector.
  • Tracking covered a range of 60 horizontal and 30 vertical degrees with a resolution of 0.64-0.69 degrees/pixel.
  • Measurement uncertainties were within 1.2 pixels, indicating high repeatability.
  • The system achieved high accuracy and repeatability in eye movement detection.

Conclusions:

  • Holographic waveguide technology is a feasible platform for developing wearable eye trackers.
  • Further development could lead to compact, see-through eye trackers for continuous monitoring.
  • This technology holds promise for improved diagnosis and management of oculomotor disorders.