On Sept. 18, 2019, researchers from the University of California, Los Angeles (UCLA) announced  developing a device geared to people who used to be able to see but lost their vision to injury or disease. While it doesn’t provide normal sight, it enhances users’ ability to navigate the world by restoring their capacity to detect movement and distinguish light and dark.

Seven years ago, Jason Esterhuizen was in a horrific car crash that destroyed his eyes, plunging him into total darkness. Today, he’s regained visual perception and more independence, thanks to an experimental device implanted in his brain by researchers at UCLA Health.

“Now I can do things that I couldn’t do before,” said Esterhuizen, 30, who moved from his native South Africa to participate in the clinical trial at UCLA. “I can sort the laundry, find my way in lighted hallways without using a cane and cross the street more safely. It’s making my life much easier.”

Designated by the U.S. Food and Drug Administration as a “Breakthrough Device,” the system wirelessly converts images captured by a tiny video camera mounted on sunglasses into a series of electrical pulses. The pulses stimulate a set of 60 electrodes implanted on top of the brain’s visual cortex, which perceives patterns of light and interprets them as visual clues.

The implant currently stimulates the left side of the patient’s brain. As a result, they perceive visual cues only from their right-side field of vision. Ultimately, the goal is to implant both sides of the brain to recover a full field of vision.