The discovery fundamentally changes the understanding of a structure in the avian eye that has been misinterpreted for centuries.

A new study explains how birds maintain sharp eyesight despite their retinas lacking blood vessels, finally resolving a centuries-old biological paradox.

Neural tissue normally dies quickly without oxygen. Yet bird retinas—among the most energy-demanding tissues in the animal ...

Eye drop nanoparticles that shrink over time overcome the eye's natural defenses, delivering protein drugs to the retina and ...

Background Both host and microbe metabolism of tryptophan (Trp) is altered in diabetes; however, the molecular mechanisms are ...

Researchers have mapped the cellular diversity of the eye’s fluid drainage tissue, identifying a cell subtype that shows early signs of dysfunction in a genetic mouse model of glaucoma. Their study, ...

Introduction: The use of human donor tissue has the potential to accelerate translational research and support the development of effective human medicines. However, post-mortem sample degradation and ...

Swimming at a crawl with cloudy eyes and mottled skin, the Greenland shark looks like it's seen better days. The shark's eyes were thought to be barely functional, as it spends most of its time in ...

Dry eye disease happens when the lacrimal glands do not make enough tears, or the tears do not have the right balance of ingredients to protect the eye surface. Tears are not just “water”. They help ...

How your eyes really work behind the scenes. Watch: Explosions in Venezuela’s capital Iran's exiled crown prince sends a message to Donald Trump Matthew Lawrence reveals why he doesn't talk about ...