New Wireless Retinal Implant Restores Central Vision in Advanced AMD

The study involved 38 participants aged 60 and older across five European countries. All had advanced AMD with a condition known as geographic atrophy, and very poor central vision before the implant. 

After receiving the implant, 32 of the participants completed one year of follow-up. Of those, 26 (about 81%) experienced meaningful improvements in vision, with an average gain of five lines on a standard eye chart. 

The PRIMA system works by inserting a tiny 2 × 2 mm wireless chip beneath the retina. Patients wear special glasses that project infrared images onto the chip. The implant converts that light into electrical signals, stimulating remaining retinal cells and allowing visual information to reach the brain. 

Although the restored vision is not yet perfect — patients still see in black and white and resolution is limited — many regained the ability to read letters and words, recognise shapes and perform daily tasks again. 

The device was implanted without reducing participants’ existing peripheral vision, which is crucial for mobility and orientation. Side-effects occurred but nearly all resolved within two months of surgery. 

Researchers say this implant represents a major step forward, though full 20/20 vision remains out of reach for now. Further improvements are in development, and regulatory filings are underway in Europe and the U.S.