# 17-22-017

scotopic vision

vision by the normal eye in which rods are the principal active photoreceptors

Note 1 to entry: Scotopic vision normally occurs when the eye is adapted to levels of luminance of less than 0,005 cd·m−2.

Note 2 to entry: In comparison with photopic vision, scotopic vision is characterized by the lack of colour perception and by a shift of the visual sensitivity function towards shorter wavelengths.

Note 3 to entry: This entry was numbered 845-02-10 in IEC 60050-845:1987.

Note 4 to entry: This entry was numbered 17-1142 in CIE S 017:2011.

Publication date: 2020-12