Recycling in the eye promotes good vision

Researchers have found that seeing well as we age depends, at least in part, on a recycling process in the eye that mops up cellular debris and recycles light-sensitive proteins. The findings suggest that disruptions in that process may harm vision and play a key role in the development of eye diseases related to aging. Inside the retinal pigment epithelium cells pictured are structures used for recycling (green) that engulf and digest spent parts of photoreceptor cells (red).