mesopic

me·so·pic

adj \me-ˈzäp-ik, mē-ˈsōp-\

Definition of MESOPIC

1

: having a face on which the root of the nose and central line of the face project moderately

2

: of or relating to vision under conditions of intermediate levels of illumination <mesopic vision tests made in a cloudy moonlight illumination—Science News Letter>