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 do the rods and cones in the eye differ? A. Rods are very sensitive to light but do not distinguish colors. B.Cones are less sensitive to light but can distinguish colors. c. Rods are less sensitive to light but can distinguish colors. Cones are very sensitive to light but can't distinguish colors. Rods are very sensitive to light and can distinguish colors.