These functions are only valid for the conditions under which they were determined. This effect is discussed in greater detail below. Visual acuity is different for the rods and the cones, with the cones having considerably more visual acuity. With the rods, we see less detail, but we do see motion well. It is important to remember that for all visual levels, everything possible should be done to eliminate glare.
Glare never helps visibility.
Remember also to never overlight. Minimize the direct uplight and wasted light. Such principles are as valid at the lowest lighting levels as at photopic levels. The eye can see very well at quite low lighting levels if it is not compromised by glare or by nearby areas that are overlit. Glare is a very important issue.