Side-by-side images show a 45,000-pixel rendering of a cat image at left, and a simulation representing an image rendered by 45,000 electrodes in a brain implant at right. (Credit: Ione Fine / ...

Elon Musk's ambitious eye implants that "ultimately may exceed normal human vision" are unlikely to reach this lofty benchmark, according to scientists who have used 'virtual patients' to expose the ...

Human vision relies on photoreceptor cells in the retina that react to visible light and trigger neurons in the optic nerve to send signals to the brain. Degradation of these photoreceptors is the ...