Retinal Degeneration

IN THE BACK of the eye exists a thin layer of neural cells that convert external light into neural signals, known as the retina. This consists of many neuronal types, but the rods are mainly responsible for detecting low levels of light and the cones can detect different wavelengths (color). Other types of neuron connect back to the brain (retinal ganglion cells) and transmit signals from the rods and cones into the processing region of the cortex, and finally the visual cortex where the information is converted into an image. Other important layers in the eye include the pigment epithelial layer, which is a pigmented single layer of cells that supports rods and cones through taking up waste material generated during the process of ...

  • Loading...
locked icon

Sign in to access this content

Get a 30 day FREE TRIAL

  • Watch videos from a variety of sources bringing classroom topics to life
  • Read modern, diverse business cases
  • Explore hundreds of books and reference titles