An Implant That Lets Blind Patients Read Again Has Been Created

Scientists have implanted devices into the eyes of blind patients, allowing them to read again. A surgeon from London’s Moorfields Eye Hospital, who performed the procedure on five people, described the results as “astonishing.”

Seventy-year-old Sheila Irwin, who is officially registered as blind, told the BBC that she can now read and solve crosswords again, calling the experience “something incredible.”

“It’s so wonderful, so amazing. It brings me such joy,” she shared.

The technology offers new hope to people with geographic atrophy — a severe form of dry age-related macular degeneration (AMD) that affects an estimated 250,000 people in the UK and about 5 million worldwide.

In this condition, a small area of the retina at the back of the eye gradually deteriorates, causing blurred or distorted vision. Patients often lose color perception and the ability to see fine details.

The new technology works by implanting a tiny 2 mm × 2 mm light-sensitive microchip, about as thick as a human hair, beneath the retina. The patient wears glasses equipped with a video camera, which uses infrared light to send visual information to the implant. The implant transmits these signals to a small pocket-sized processor, where the images are enhanced and clarified before being sent to the brain via the optic nerve — partially restoring the patient’s vision.

However, it can take several months for the brain to learn how to interpret the new visual information.

Mahi Mukit, a consultant eye surgeon at Moorfields Hospital who leads the UK branch of the research team, described the innovation as “cutting-edge and life-changing.”

“This is the first implant that has proven capable of restoring meaningful vision suitable for everyday tasks such as reading and writing. I believe it’s a tremendous breakthrough,” Dr. Mukit said.

The study’s results were published in the New England Journal of Medicine. The experiment involved 38 patients from five European countries, all suffering from geographic atrophy.

Thirty-two participants received the Prima implant, developed by California-based biotech company Science Corporation. Of those, 27 regained the ability to read. After a year, they could identify the top five lines on an eye chart.

Sheila’s result is even more remarkable. Before receiving the implant, she couldn’t read at all. But during BBC’s filming at Moorfields Hospital, she read the chart flawlessly — without a single mistake.

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