Eye Tracking Devices for Computer Access: A Complete Guide

Eye tracking technology enables people with severe motor impairments to control computers, communicate, and access the internet using only their eye movements. The technology uses infrared cameras to track where your eyes are looking on screen, translating gaze position into cursor movement.

How Eye Tracking Works

An eye tracker mounts below or above your monitor and projects near-infrared light toward your eyes. Cameras detect the reflection patterns from your cornea and pupil, calculating exactly where on screen you are looking. Modern systems track both eyes simultaneously and can distinguish between intentional gaze shifts and natural eye movements.

Calibration takes about 30 seconds — you follow a dot around the screen while the tracker learns your eye geometry. Most devices need recalibration if you change position significantly or remove and replace glasses.

Leading Eye Tracking Devices

The Tobii Dynavox PCEye 5 is the clinical standard for accessibility eye tracking. It offers the widest head movement range (allowing users to shift position naturally), works with glasses and most lighting conditions, and integrates with Windows accessibility software including Tobii's own Communicator suite.

For a more affordable entry point, the Tobii Eye Tracker 5 is a consumer device originally designed for gaming that also works for basic computer access. It tracks eye position with low latency and works with Windows accessibility features, though it has a narrower head box than clinical devices.

Software for Eye Control

Windows Eye Control is built into Windows 10 and 11 through Settings > Accessibility > Eye Control. It provides a launchpad with buttons for left-click, right-click, scroll, and keyboard access. Dwell clicking — looking at a target for a set duration to click — is the primary interaction method.

For communication, dedicated AAC (Augmentative and Alternative Communication) software like Tobii Communicator, Grid 3, and TD Snap provides symbol boards, text-to-speech, and pre-built communication pages optimized for eye gaze input.

Setup Tips for Success

Monitor position matters enormously. Place your screen at arm's length, directly in front of your eyes, with the eye tracker centered below the screen. Avoid backlighting — do not sit with a window behind you. Consistent indoor lighting produces the best tracking accuracy.

Start with longer dwell times (1-1.5 seconds) and reduce them as you gain precision. Use the zoom feature for small targets rather than trying to precisely gaze at tiny buttons. Take breaks every 20-30 minutes to reduce eye fatigue, especially when first learning.

Beyond Basic Access

Eye tracking is increasingly used beyond accessibility. Researchers use it to study reading patterns, UX designers track where users look on websites, and surgeons use gaze-controlled displays in operating rooms. The Tobii Eye Tracker 5 also enhances gaming by letting games respond to where you look — enemies react to your gaze, cameras follow your eyes, and UI elements appear where you are looking.

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