Gold Nanoparticles Restore Vision in Macular Degeneration - Neuroscience News

Summary: A new study shows that gold nanoparticles injected into the retina can restore vision in mice with retinal degeneration, offering a less invasive alternative to current retinal prostheses. When activated by patterned infrared light, these nanoparticles stimulate retinal cells, bypassing damaged photoreceptors.This activation leads to visual signal transmission to the brain, confirmed by activity in the visual cortex. Researchers envision a future device combining these nanoparticles with laser-equipped goggles to restore functional vision in humans.Key Facts:Targeted Activation: Gold nanoparticles stimulate bipolar and ganglion cells using infrared light.Non-Invasive Approach: Unlike electrode implants, nanoparticle delivery uses simple eye injections.Restored Visual Signals: Brain imaging confirmed visual cortex activation post-treatment in mice.Source: Brown UniversityA new study by Brown University researchers suggests that gold nanoparticles — microscopic bits of gold thou...