Moving Ahead With Eye Power

Eye trackers have literally opened up the world to many disabled people who suffer from limited movement and speech. The sophisticated devices track eye movements — distinguishing the viewer’s precise gazepoint at a computer screen — enabling communication and environmental control through an array of interface tools. For example, a man whose motor control is limited to his eyes can write a regular newspaper column, and a quadriplegic girl can attend school and participate in class with the help of an eye tracker.