A surprising vitamin A discovery is changing what scientists know about vision
Scientists at Johns Hopkins University have uncovered a surprising process that helps humans develop sharp vision before birth, challenging decades of assumptions about how the eye forms.
Scientists at Johns Hopkins University have uncovered a surprising process that helps humans develop sharp vision before birth, challenging decades of assumptions about how the eye forms.
The short version
- Using miniature human retinas grown in the lab, researchers discovered that a vitamin A derivative and thyroid hormones work together to shape the foveola, the tiny region at the center of the retina responsible for our sharpest vision.
- Scientists at Johns Hopkins University have uncovered a surprising role for a vitamin A derivative in the development of human vision.
- Their research reveals how this molecule works alongside thyroid hormones to help form the part of the eye responsible for our sharpest sight, challenging a scientific explanation that has stood for roughly 30 years.
What happened
The discovery centers on an unexpected transformation that occurs in the developing retina before birth. Certain cells that initially detect blue light appear to change into cells sensitive to red and green light, helping create the specialized arrangement needed for clear central vision.
Why it matters
Published in Proceedings of the National Academy of Sciences , the findings could reshape scientists' understanding of how human eyes develop.
Summary by Nerd News Network. Read the full article at ScienceDaily — Top Science via the links above and below.