Hallucinogens and afterimages.
D000360:Afterimage; D006213:Hallucinogens / Q000009:adverse effects*; D006801:Humans; D008238:Lysergic Acid Diethylamide / Q000009:adverse effects; D019966:Substance-Related Disorders; D014787:Vision Tests
D006213:Hallucinogens; D008238:Lysergic Acid Diethylamide