With the help of the PRIMA device, 80% of the 32 patients who returned for reassessments one year after the chip implantation had achieved clinically meaningful visual improvements.

A London hospital has hailed a “life-changing” breakthrough for blind people as a electronic eye implant helps patients to see again.

The device, known as Prima, has been "life-changing" for patients, said Mahi Muqit, senior vitreoretinal consultant at Moorfields Eye Hospital and the UCL Institute of Ophthalmology.