Nanotechnology

For millions living with blindness, the idea of seeing again has long felt out of reach. Scientists are now inching closer to making that dream a reality. A recent study describes a retinal implant made of tellurium nanowires, a metallic material capable of converting light directly into electrical signals that the brain can understand. This …

The dream of restoring sight to the blind has long been one of medicine’s most ambitious pursuits. For decades, researchers have searched for ways to bypass the damage caused by retinal diseases such as age-related macular degeneration (AMD) and retinitis pigmentosa, which gradually destroy the photoreceptor cells responsible for capturing light. These conditions rob millions …