What describes the role of eye rods?

Rods are a type of photoreceptor cell located in the retina of the eye and have a specialized function in low-light conditions. Their primary role is to enable vision in dim lighting, which is often referred to as night vision. Rods are highly sensitive to light and can detect even small amounts of light, making them essential for seeing in darkness or during twilight. Unlike cones, which are responsible for color vision and operate best in bright light, rods do not contribute to color perception; they only provide black-and-white images.

Thus, the correct description of rods is that they are responsible for night vision, allowing us to perceive our surroundings in low-light situations.