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Vision

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Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.

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Related Experiment Video

Updated: Jun 8, 2026

VisualEyes: A Modular Software System for Oculomotor Experimentation

VisualEyes: A Modular Software System for Oculomotor Experimentation

Published on: March 25, 2011

Open Iris - An Open Source Framework for Video-Based Eye-Tracking Research and Development.

Roksana Sadeghi¹, Ryan Ressmeyer², Jacob Yates¹

¹Herbert Wertheim School of Optometry and Vision Science, University of California, Berkeley, California, USA.

Biorxiv : the Preprint Server for Biology

|March 11, 2024

Summary

This summary is machine-generated.

OpenIris is a flexible, open-source eye-tracking framework for custom research needs. This adaptable system offers high-precision, high-speed (500Hz+) video-based eye movement analysis.

Keywords:

Eye-tracking eye movement open-source

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Last Updated: Jun 8, 2026

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Area of Science:

Biomedical Engineering
Computer Science
Neuroscience

Background:

Commercial eye-tracking solutions often lack the flexibility and affordability for specialized research applications.
There is a need for adaptable, open-source tools for high-precision and high-speed eye-tracking.

Approach:

Developed OpenIris, a modular, C#-based open-source framework for video-based eye-tracking.
Designed with a plugin architecture for hardware, tracking, and calibration customization.
Enabled remote control via a network interface for integration with other systems.

Key Points:

Supports online (live camera) and offline (recorded video) eye movement data acquisition.
Includes example plugins for 3D eye motion tracking, including torsion.
Achieves high binocular pupil tracking frame rates exceeding 500Hz.

Conclusions:

OpenIris addresses the limitations of current eye-tracking technology for custom research environments.
Provides a user-friendly, extensible platform for advanced eye-tracking applications.
Aims to democratize access to high-performance eye-tracking for researchers.