Experimental Eye Drops Restore Sight in Blind Mice

Researchers developed photoswitchable small molecules that mimic photoreceptor function and restored visual responses in blind animal models.

The approach reactivates surviving retinal circuits without gene therapy or implanted devices.

It could provide a simpler, less invasive treatment path for diseases like age-related macular degeneration and retinitis pigmentosa.

Because the retina often remains intact after photoreceptor loss, eye drops or injections may offer a practical way to restore light input.