What Is the Purkinje Shift

Multiple Choice

What is the Purkinje shift?

A) the observation that photopic vision is less sensitive to color than scotopic vision
B) the observation that long wavelength light excites the L-cone more than short-wavelength light does
C) the observation that short wavelengths tend to be relatively brighter than long wavelengths in scotopic vision compared to photopic vision
D) the observation that people with color deficiencies shift to greater dependence on scotopic at higher light levels than people with normal color vision