article_snippet: The back of the retina contains cones to sense the colours red, green and blue.
article_snippet: Spread among the cones are rods, which are much more light-sensitive than cones, but which are colour-blind.
article_snippet: the eye usually receives too much blue - and thus has fewer blue-sensitive cones.
article_snippet: Instead, excess blue light gets scattered to the surrounding rods.
article_snippet: The back of the retina contains cones to sense the colours red, green and blue.
article_snippet: Spread among the cones are rods, which are much more light-sensitive than cones, but which are colour-blind.
article_snippet: the cones are not as sensitive as the rods, so light allowed the cones to function better – even under lower light levels.
article_snippet: Meanwhile, the bluer light, that was not well-captured in the glial cells, was scattered onto the rods in that vicinity.