Scientists have discovered a fossilized fish so well preserved that the rods and cones in its 300-million-year-old eyeballs are still visible under a scanning electron microscope. It is the first time ...

Share on Pinterest New research involving cones and rods in the retina could lead to new treatments for vision loss. Gregory Adams/Getty Images Cone photoreceptors in retinal degeneration have been ...

Our bodies adjust to the cycle of day and night thanks to specialized neurons in our eyes. Ongoing study of these cells could lead to new treatments for winter depression and other conditions In the ...

Daylight vision relies on high sensitivity to subtle changes in the spatial pattern, contrast and chromaticity of light inputs. Noise in the responses of cone photoreceptors places a fundamental limit ...

A 10-week-old Great Gray owlet and her mother at the Berlin Zoo in Germany. Owls’ eyes fill more than half the volume of their skull to help them see at night. Credit: AP Sign up for the Concord ...