Under very dim levels of illumination
A) rods reach their maximum light sensitivity more rapidly than do cones.
B) rods are more light sensitive than cones.
C) it is particularly important to look straight at the objects we want to see.
D) all of these statements are true.

Question

Quizplus · Accepted Answer

Under very dim levels of illumination, rods are more light sensitive than cones. This is why we are able to see dim objects better when looking slightly to the side of them, because the peripheral retina has a higher concentration of rods. It is also why colors are difficult to distinguish in dim light, as rods do not detect color. Looking straight at the object is not particularly important in this context.

Under Very Dim Levels of Illumination