WordNet
dark adaptation
n. the process of adjusting the eyes to low levels of illumination; cones adapt first; rods continue to adapt for up to four hours
Usage examples of "dark adaptation".
This period of improving vision in dim light is called dark adaptation.
There was no dark adaptation, or adjustment of the eyes, in this total blackness.
And all the while I was trying to keep up my all-around awareness, protecting my dark adaptation, and making appreciations.
I read this article that said large doses of vitamin A and E can improve the visual field and enhance dark adaptation.