Forget the eye drops. Researchers at the University of Pittsburgh have engineered a living bacterium to take up long-term residence on the eye's surface and quietly deliver anti-inflammatory therapy around the clock, no dropper bottle required.

Forget the eye drops. Researchers at the University of Pittsburgh have engineered a living bacterium to take up long-term residence on the eye's surface and quietly deliver anti-inflammatory therapy around the clock, no dropper bottle required.