Effect of restricted viewing time on mid-match points for normal observers on the Moreland and Pickford Nicolson anomaloscopes.

Restricted viewing time has previously been shown to produce a tritan classification for color normal observers on the City University Colour Vision Test (CUCVT). The present investigation, which uses the Moreland anomaloscope, studies the effect of restricted viewing time on mid-match point (MMP). It shows that a color normal observer requires more green in a match under these conditions. A study of the Rayleigh equation using the Pickford Nicolson anomaloscope shows that restricted viewing time does not affect the MMP for this metameric match for color normal observers.