On the need of accurate device calibration in color vision deficiency computer assessment

Among the wide offer of Color Vision Deficiency (CVD) assessment tests, only a few are designed to be administered via digital display monitors and thus require accurate color calibration and profiling. On the one hand, using fully characterized and calibrated devices is desirable to reduce the error introduced by inter-device variability. However, the need for a calibrated device restricts the opportunities for users and institutions to perform pre-screenings, low-cost tests, and online/remote tests.Making tests more accessible and available to users might increase the awareness and understanding of CVDs and should help potential CVD observers, whose status might go unnoticed and undiagnosed for years. In this paper, we analyze data gathered using a simple online game (http://qolour.it) to determine whether it is possible to avoid controlled environments and protocols for CVD pre-screening purposes. In particular, we analyze the use of mobiles, tablets, and personal computers to perform CVD pre-screenings, comparing the results and performances obtained by a control group with the rest of the users.