Which of the following is true regarding the mesopic vision?

Mesopic vision is indeed characterized by lower light levels, such as those experienced during twilight. This phase of vision occurs when the light is not bright enough for photopic (daylight) vision but too bright for scotopic (night) vision. During mesopic conditions, both rod and cone photoreceptors in the retina are utilized, allowing for some level of visual performance that incorporates both luminance and some color discrimination, although not as effectively as during photopic vision.

At twilight, the available light creates an environment that requires adaptations from both the rod and cone systems, leading to a unique form of vision that can perceive shapes and some colors, although not in the same vibrancy as under brighter conditions. This stage of vision is especially important for activities such as driving at dawn or dusk, where light conditions can vary significantly.