A common bacterium usually found in the respiratory system appears to be linked to cognitive decline and Alzheimer's disease when it's present in the retina. Chlamydia pneumoniae – often responsible ...

People with a leading cause of blindness were able to read again thanks to a tiny wireless chip implanted in the back of the eye and specialized augmented glasses, according to study results published ...

Even Charles Darwin was puzzled by the evolution of the vertebrate eye. New research suggests that it traces back to a cyclopean invertebrate with a single eye atop the head. By Carl Zimmer Look at ...