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.
In the presence of glare, the iris in the eye closes down, and vision at low lighting levels is not as good as without the glare source. Another important issue is transient adaptation, which refers to the time it takes the eye to adjust in going from bright levels of lighting to faint ones, and vice versa. One must also be conscious of the level of the ambient lighting. All of these items, and others, must be taken into account in investigating vision at low lighting levels. No one item operates in isolation from the others.