Purkinje shift
Psychology.
the changes in perception of the relative lightness and darkness of different colors as illumination changes from daylight to twilight.
Origin of Purkinje shift
First recorded in 1970–75; see origin at
Purkinje fiber
Medical definitions for purkinje shift
Purkinje shift
n.
The change in the eye's region of maximal visual acuity as a function of availability of light; in the light-adapted eye the region is in the yellow range whereas in the dark-adapted eye the region is in the green range of the color spectrum.