Which statement concerning night vision is true?

The statement that it is best to use off-centre vision to view objects clearly during low-light conditions is accurate. When in dim lighting, the human eye relies on rod photoreceptors, which are more sensitive to light than cone photoreceptors (the latter being primarily responsible for color vision and function best in brighter conditions). The central part of the retina, where cone cells are concentrated (the fovea), is less effective in low light. Therefore, focusing slightly away from the object – utilizing off-centre vision – allows the rods to detect the object better, enhancing night vision and visual acuity in low-light situations. This technique is a key strategy for pilots to effectively gauge their surroundings during nighttime operations, where visibility is significantly reduced.