#$%^&*AU2019232777A120191003.pdf#####ABSTRACT System for simulating effects of impairment caused by recreational consumption of marijuana. The system includes i) an optical filter having a pre-defined spectral pass-band and a nondiffractive spatial pattern configured to deviate a beam of light incident onto the filter, and, optionally, ii) radiant objects at least one of which delivers light in a spectral band corresponding to color that is complementary to the color defined by the pass-band of the optical filter. Method for demonstration and analysis of impairment of cognitive function caused by using the system to affect the vision of the user. See Fig. 1.WO 216123234 PCTIUS216/015152 U5 NNW -01 q6 <；I o r o (C
