Science news articles about 'human retina'

  • The world is full of darkness, reflected in the physiology of the human retina, Penn researchers say

    ... of the retina to the light and dark contrasts of the natural world, demonstrating the likelihood that the neural pathways humans ... with more densely clustered off cells, as in the human retina, suggesting that human vision has evolved to efficiently ...
  • Sloppy shipping of human retina leads IU researchers to discover new treatment path for eye disease

    Sloppy shipping of a donated human retina to an Indiana University researcher studying a leading cause ... a year or two. A serendipitous accident in which a donated human retina from an eye bank was severely shaken ...
  • Human vision inadequate for research on bird vision

    ... researchers used a mathematical model to investigate how bird and human retina work. Using the model combined with information on differences in the colour-sensitive cones of the eye, they have been able ...
  • Anti-HIV drugs reduce the cause of some forms of vision loss

    ... death–inducing pathways were shown to be activated in human retinas after retinal detachment, the authors suggest ... the HIV protease inhibitors cannot reattach the retina, they might be of clinical benefit through their ability ...
  • Circadian math: 1 plus 1 doesn't always equal 2

    ... due to spectral opponent mechanisms formed in the retina." This indicates that spectral opponency is a fundamental characteristic of how the human retina converts light into neural signals ...
  • Gene therapy restores vision to mice with retinal degeneration

    ... -sensitive protein in other neuronal cells found throughout the retina. "This is a proof of principle that someday we may be able to repair ... to which they could swim. "The same level of melanopsin expression in a human retina might allow someone who otherwise ...
  • Mammals can be stimulated to regrow damaged inner retina nerve cells

    ... said, "so the cellular source for regeneration is present in the human retina." He added that further studies ... a systematic analysis of the response to injury in the mouse retina, and the effects of specific growth factor stimulation ...
  • Human nervous system: Better than thought

    LA JOLLA, Calif., April 8 (UPI) -- U.S. scientists say their study of the human retina suggests the nervous system operates with higher precision than has been previously appreciated.
  • Researchers discover mechanism that helps humans see in bright and low light

    ... . The discovery could contribute to better understanding of human diseases that affect the retina, including age-related ... function properly, cones in the mouse, primate and human retinas are able to function in bright light ...
  • Sight gone, but not necessarily lost?

    ... were suspected to be involved in blood vessel development in the human retina. Defects in any of these genes cause ... to function normally to send electrical signals. "If the human retina responds to a decrease in blood supply ...
  • Chickens 'one-up' humans in ability to see color

    ... . As a result, birds have more types of cones than mammals. "The human retina has cones sensitive to red, blue ... of the organization of the chicken's retina will help us better understand and repair such problems in the human eye ...
  • Sight recovery in mice

    ... some electrical properties and their connections with the neurons of the inner retina which normally transmit visual information to the brain ... Picaud and researchers at the Institut de la Vision using human retina in cultures and therapeutic vectors ...
  • Blind mice can 'see' thanks to special retinal cells

    ... to see? The conventional wisdom: rods and cones. The human retina contains about 120 million rods ... -- courtesy of special photosensitive cells in the rodents' retinas. Until now, it was presumed that those cells, called ...
  • Light switches on the brain

    ... from algae and bacteria and are related to the proteins found in the human retina.When rhodopsins in the human eye's photoreceptors are struck by light, they initiate a cascade of biochemical reactions, causing ...
  • A clearer picture of vision

    ... human retina — the part of the eye that converts incoming light into electrochemical signals — has about 100 million light ...

Want to learn more? Search for human retina

Return to e! Science News homepage for the latest science news