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 ...

In mammals, synchronization of the circadian pacemaker in the hypothalamus is achieved through direct input from the eyes conveyed by intrinsically photosensitive retinal ganglion cells (ipRGCs).

Small bistratified cells (SBCs) in the primate retina carry a major blue-yellow opponent signal to the brain. We found that SBCs also carry signals from rod photoreceptors, with the same sign as S ...

KUMAMOTO, Japan, Dec. 24 (UPI) --Rods and cones, the two main photoreceptor cells, are vital to human sight -- converting visible electromagnetic radiation into information our brains can use. And it ...

Retinitis pigmentosa (RP) is a common hereditary eye disorder that leads to the gradual deterioration of rod cells causing reduced peripheral vision and night vision. Subsequent loss of cone ...

In addition to allowing us to see, the mammalian eye also detects light for a number of "nonvisual" phenomena. A prime example of this is the timing of the sleep/wake cycle, which is synchronized by ...

Scientists have discovered rod and cone cells while examining the fossil of 300-million-year-old fish eyes. The findings suggest that the fish likely possessed color vision. Scientists found fossil of ...

After taking a neuroscience or biology course, most students have heard about rods and cones. But what about the recently discovered third class of photoreceptor cells in the retina - intrinsically ...

Scientists in the U.S. have found a third kind of light-sensitive cell in the eye, which they say sets the body's internal clock. The newly discovered cells are shaped like twisted tree branches and ...

Why does the side of my vision see better than the centre of my vision in the dark? originally appeared on Quora: the knowledge sharing network where compelling questions are answered by people with ...