Chopsticks

The rods pick up the light signals from the outside within the eye. In contrast to the cones, the rods only absorb monochromatically, i.e. they can only distinguish between black and white. At 120 million, they are much more than the cones (6 million) and have a greater sensitivity to the cones, so that they can be seen with you even at night.

https://de.wikipedia.org/wiki/Stäbchen_(Eye) _{(Wikipedia CC-by-sa-3.0)}