First Stargardt Patient Gets Vision Chip That Lets Him Read Letters

The first person with Stargardt disease received a tiny implant in the back of the eye in May. The device is a two‑millimeter square chip that sits where the light‑sensing cells have died. Within weeks the patient could see a single letter and later read a short word. The procedure takes about an hour and leaves a small patch of central vision that is sharp but black and white.

Patients wear special glasses that carry a camera and stream images to the chip. The implant acts like an artificial photoreceptor, turning visual input into electrical signals that travel down the optic nerve. Because the field of view is narrow, the world looks like looking through a straw. The contrast is high, so a few letters can be distinguished at a time. Engineers are already planning a larger implant to widen the view.

Stargardt disease slowly destroys the outer retina, creating a central blind spot that grows over time. About 150,000 people worldwide have lost sight because of this inherited condition. The chip’s success shows that restoring vision with a BCI approach is possible. The team says a next‑generation version will be tested in humans within a year and could reach near‑natural sharpness in five years.

The same chip is already sold in Europe for patients who have lost vision to geographic atrophy, a form of age‑related macular degeneration. The organization hopes to apply the technology to many neurological conditions, including monitoring brain activity. By placing a sensor inside the skull and on top of the brain, the device could help treat a range of disorders beyond sight.