The aim of the study is to determine the consistency of the desired colour reproduction of the stimuli using calibrated printing technology available to anyone (EpsonStylus Pro 7800 printer was). 24 colour vision assessment plates created in the University of Latvia were analysed right after their fabrication on august 2012 and after intense use for 7 months (colour vision screening on 700 people). Multispectral imagery results indicate that the alignment of the samples after seven months of

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... has maintained on the CIExy confusion lines of deutan deficiency type, but the shift towards achromatic area in the diagram indicate decrease in the total colour difference (∆E* ab ) of test background (achromatic) areas and stimuli (chromatic) areas, thus affecting the testing outcome and deficiency severity level classification ability of the plates. corresponding pairs of achromatic and chromatic colour matches is described earlier [8] . A set of 24 PIC plates (10 for protan deficiency (5 reddish, 5 greenish) and 14 for deutan deficiency (9 reddish and 5 greenish)) was created (see Figure 1 for examples).