What type of vision utilizes both rods and cones and occurs during dawn and dusk?

The type of vision that utilizes both rods and cones and occurs during dawn and dusk is known as mesopic vision. This phase of vision occurs in lighting conditions that are intermediate between the bright light of daytime and the low light of nighttime. During mesopic conditions, the rods, which are responsible for vision in low light, and the cones, which are responsible for color and daylight vision, both contribute to visual perception.

As daylight fades or begins to appear, the eye transitions to utilize these two types of photoreceptor cells simultaneously. This allows for better visibility in environments where lighting gradually changes, like during twilight.

In contrast, scotopic vision is predominantly reliant on rods and is used in dark environments, while photopic vision relies on cones and occurs in well-lit conditions. Photomodal vision is not a standard term in the context of visual perception under varying light conditions, further distinguishing mesopic vision as the most accurate answer to the question.