How the Eyes Turn Light Into Vision

  1. Light enters through the cornea, bends, and focuses on the retina.
  2. Photoreceptor cells—rods and cones—convert light into electrical signals.
  3. Rods see dim light; cones see color and fine detail.
  4. The optic nerve carries signals to the brain’s visual center.
  5. Each eye flips the image upside down; your brain corrects it.
  6. Vision relies on constant micro-movements to keep scenes clear.
  7. The fovea is your retina’s high-definition hotspot.
  8. Your brain fills in blind spots—you never notice them.
  9. Color perception depends on how three cone types overlap.
  10. Vision is part physics, part neuroscience—and entirely interpretation.