People are different. Some can't handle the light. Some can't see as well in the dark. As one of the former, I find I am also very sensitive to light at night.

People are different. Some can't handle the light. Some can't see as well in the dark. As one of the former, I find I am also very sensitive to light at night. Seeing a bright light within an hour or two of bedtime will push the point when I fall asleep back significantly.