Rods are sensitive to dim light, they allow you to see at night or in dark places. For rods to work properly your body needs sufficent Vitamin A. Lack of vitamin A will cause night blindness, where your eyes adjust to dim light slowly.
Cones work best in bright light, they allow you to see in color. Cones come in three flavors, receptive to either red, blue, or green. These cones work together so you can see a range of colours.
