Which part of the eye contains the photoreceptors responsible for dim light vision?

The retina is the part of the eye that contains the photoreceptors responsible for dim light vision, which are specifically known as rods. The rods are highly sensitive to light and allow for vision in low-light environments, making them essential for night vision and peripheral vision.

In contrast, the other structures mentioned do not contain these photoreceptors. The ciliary body plays a role in the accommodation of the lens and controlling the flow of aqueous humor, while the sclera is the tough outer layer of the eye that provides structure and protection. The choroid, located between the retina and the sclera, contains blood vessels that nourish the retina and helps absorb excess light but does not contain light-sensitive cells itself. Thus, the retina's unique composition of rods and cones is crucial for visual function in varying light conditions.