Most of the 56,000 eyes sent to the little lab in Wisconsin come from vets who want help diagnosing dogs, cats and horses. But the repository also has eyes from sloths, elephant seals and dragonflies.
In a study of people from a variety of professions, dressmakers were found to have superior 3-D vision. Could their endless hours of delicate handwork be honing eyesight?
People who are sad have a harder time seeing yellow and blue, an experiment finds, but they can see green and red just fine. It might have something to do with dopamine receptors in the brain.
