Final answer:
Scotopic vision is used during dawn, dusk, or full moonlight, where rod cells in the eyes are relied upon to see in low-light conditions.
Step-by-step explanation:
The type of vision used during dawn, dusk, or full moonlight is primarily scotopic vision, which is the ability to see in low-light conditions. During these times, our eyes rely more on rod cells, which are photoreceptors that are sensitive to low light levels, although not capable of distinguishing colors. Unlike during the day when we use photopic vision, which depends on cone cells and provides color perception and finer detail, at night our vision is adapted to make the most out of the available light. For instance, during the full moon, the lunar surface illuminated by the sunlight can provide enough light for our vision to adjust and navigate the environment. The moon's surface changes dramatically with its phase, and during the full phase, while it appears to show less topographic detail because of the direct sunlight and absence of shadows, the moonlight it casts can still facilitate nocturnal activities on Earth.