NASA tool lets paralyzed people communicate

Many modern tools originate from the fires of war and the cold void of space. Once intended for destructive power and extreme durability, they now serve different purposes on Earth. Fortunately, space exploration continues, meaning we continue to have innovations repurposed for us here on the Blue Planet.

The latest example comes from NASA and Eyegaze, which created a device that lets paralyzed individuals communicate with others using only their eyes. It tracks eye movements, enabling them to type letters and manipulate programs by looking at them. As a result, it helps those who can’t move from the eyes down to speak to others. 

How does this NASA tool work?

Virginia-based tech firm Eyegaze and the space agency created eye-tracking technology for those with health conditions that restrict movement, such as muscular dystrophy and cerebral palsy.

They call it Eyegaze Edge, and its multiple features allow it to function by following eye movements. It integrates into multiple gadgets and peripherals, such as computers, mobile phones, and tablets. 

Consequently, Eyegaze functions like an external mouse and keyboard you control with your eyes. It lets users chat online, post on social media, send emails, make phone calls, and text. 

“Working with NASA, we were able to make the device less bulky,” said Eyegaze engineer Preethi Vaidyanathan. “Since then, we integrated the external into a small camera.

It mounts above or below a regular computer screen and needs less than 15 seconds to calibrate to a user’s gaze. 

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“We are constantly thinking about what the customers want. One thing is freedom of movement, so controlling a wheelchair gives them that to some extent,” said Eyegaze engineer Preethi Vaidyanathan.

Eyegaze built its first model in 1988, but it required cumbersome equipment that fit three shipping boxes. As a result, the prototype became too expensive and complicated for patients.

In 1998, the Virginia-based company and NASA entered a public-private partnership to make the gadget more portable and affordable while maintaining efficiency.