Final answer:
The concentration of rods increases and the concentration of cones decreases as you move further away from the fovea. Cones are concentrated in the center of the retina for high-resolution color vision, while rods are more numerous in the peripheral areas, aiding in low-light vision.
Step-by-step explanation:
As you move further away from the fovea, the concentration of rods increases, and the concentration of cones decreases. The fovea is densely packed with cones, which are responsible for high-resolution color vision and are most useful in bright light. Rods, on the other hand, are more scattered throughout the retina, especially in the periphery. They are more sensitive to light and play a critical role in vision under low-light conditions, detecting shades of gray and enabling us to see in the dark. However, rods do not provide color vision or the fine detail that cones offer.