vision by the normal eye intermediate between photopic vision and scotopic vision
Note 1 to entry: In mesopic vision, both the cones and the rods are active.
Note 2 to entry: See also CIE 191:2010
Note 3 to entry: This entry was numbered 845-02-11 in IEC 60050-845:1987.
Note 4 to entry: This entry was numbered 17-763 in CIE S 017:2011.