article_snippet: Researchers in Leipzig found that glial cells, which also span the retinal depth and connect to the cones, have an interesting attribute.
article_snippet: glial cells, which also span the retinal depth and connect to the cones are essential for metabolism, but glial cells, which also span the retinal depth and connect to the cones are also denser than other cells in the retina.
article_snippet: In view of this, my colleague Amichai Labin and I built a model of the retina, and showed that the directional of glial cells helps increase the clarity of human vision.
article_snippet: But we also noticed something rather curious: the colours that best passed through the glial cells were green to red, which the eye needs most for daytime vision.
article_snippet: Further computer simulations showed that green and red are concentrated five to ten times more by the glial cells, and into their respective cones, than blue light.
article_snippet: Even more interesting was the fact that the colours that were best guided by the glial cells matched nicely with the colours of the cones.
article_snippet: These results mean that the retina of the eye has been optimised so that the sizes and densities of glial cells match the colours to which the eye is sensitive (which is in the eye an optimisation process suited to our needs).