The concentration of rods increases as you move from the center to the periphery of the retina. On the other hand, the concentration of cones increases as you move from the periphery to the center where the macula lutea and fovea centralis are located. If you compare the function of rods and cones, how do you account for the different distribution patterns of these cells?

Explanation:

The center of macula lutea, the fovea centralis, contains only cones; other retinal cells are absent, exposing the cones directly to incoming light. The high concentration of cones and direct exposure to light make the fovea centralis the site on the retina that provides the highest visual acuity. As a result, images that are viewed directly are focused upon the fovea centralis.

Although, rods are more numerous and sensitive to light than cones, which makes it easy to provide vision in dim light. Rod is more capable of detecting movement but cannot detect color, and dimly lit objects appear gray. This is because the concentration of rod increases farther away from the macula lutea. Detecting a moving or dimly lit can likely be achieved by looking slightly away from the object.

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