Subretinal implant (credit: K. Stingl et al./Proc. Royal Soc. B)


The image entering the eye is picked up by subretinal photoreceptors in the fovea.
(Credit: K. Stingl et al./Proc. Royal Soc. B)


3mm x 3mm microchip is subretinally implanted beneath the fovea
(credit: K. Stingl et al./Proc. Royal Soc. B)

New retinal implant gives sight to nine blind people

1500 pixels, with no camera required; patients able to read letters

February 22, 2013

German and Hungarian researchers have brought sight to nine blind patients with hereditary retinal degeneration, using a subretinally implanted microelectronic chip with 1500 pixels.

The chip size is approximately 3mm x 3mm and is surgically implanted below the fovea (area of sharpest vision in the retina).

It provides a diamond-shaped visual field of 15 degrees diagonally across chip corners.

It is powered by a subdermal coil behind the ear that is powered from a battery via transdermal inductive transmission.

The microelectronic chip has 1,500 independent microphotodiode-amplifier electrode elements.

Read more: New retinal implant gives sight to nine blind people | KurzweilAI.

Home           Top of page