David S. Kozin Posted October 27, 2010 Report Share Posted October 27, 2010 File Name: A Chronic Impairment of Colour Vision in Users of LSD File Submitter: David S. Kozin File Submitted: 27 Oct 2010 File Category: HPPD Research Articles A Chronic Impairment of Colour Vision in Users of LSD HENRY DAVID ABRAHAM Summary: Forty-six users of the hallucinogen lysergic acid diethylamide were compared with 31 controlson a testof colour discriminationan average of two years after their last exposure to the drug. Controls performed better than users, and LSD users without flashbacks performed better than users with flashbacks. An analysis of variance between the three groups was significant at P <0.001. This study suggests that some users of LSD may have a sustained or irreversible impairment in colour discrimination. Click here to download this file Link to comment Share on other sites More sharing options...
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