Question

The doctrine that there are functionally two distinct ways in which our eyes work, the photopic, associated with the cones, and the scotopic, associated with the rods, is known as the ______ theory of vision.

Answer 1

Duplex theory of vision

Step-by-step explanation:

The duplex theory of vision suggests that the eyes work functionally in two different ways: the scotopic system which is formed of the rod cells and allows the vision in the low light conditions and the photopic system which is formed of the cone cells and allow us to see in the light conditions.

The duplex theory arose due to the different spectral absorption by different photoreceptors of the eye, the differences in the sensitivity to the light and different summation properties.

Thus, Duplex theory of vision is the correct answer.