It is not a fixed rule that women have better night vision than men. On one hand, women have better vision in a dark environment than men, especially women are more sensitive to red light. But on the other hand, men possess the vision which is more suitable for the space with ling distance and small scope. Therefore, men possess a safer vision than women when seeing objects in long distance at night. Besides, almost all of the women get a kind of night blindness, so they can not well judge the movement of the cars in front and behind, while men are better at doing it. In total, men possess better vision than women.
