Vision science

Presbyopia has been a quiet companion of aging for as long as humans have been reading fine print. It creeps in slowly, often announced by the moment someone has to stretch a menu farther from their face, or when their phone seems to shrink overnight. For generations, the default answer has been reading glasses. Simple, …

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 …