Princeton's WordNet(0.00 / 0 votes)Rate this definition: 1  shimmer, play(verb) a weak and tremulous light. 2  shimmer(verb) shine with a weak or fitful light. 3  shimmer(verb) give off a shimmering reflection, as of silk.
CONE CELLS are the second type of light sensitive cells in the retina of the eye. The human retina contains 6-7 million cones; they function best in bright light and are essential for acute vision (receiving a sharp accurate image).
How the eye perceives color. To make things more complicated, no two eyes see things the same. The eye perceives color through the rods and cones. The color we see is a wavelength of light that our eyes interpret using these rods and cones. The rods see black and white and the cones perceive colors. Shade selection is best done with light most suited for our eyes.