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Dyschromatopsia in heroin addicts
Author(s) -
Dias P. L. R.
Publication year - 1990
Publication title -
british journal of addiction
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.424
H-Index - 193
eISSN - 1360-0443
pISSN - 0952-0481
DOI - 10.1111/j.1360-0443.1990.tb03077.x
Subject(s) - heroin , confusion , addiction , hue , medicine , psychology , audiology , heroin addiction , psychiatry , optometry , artificial intelligence , drug , computer science , psychoanalysis
Summary The Farnsworth‐Munsell 100‐hue test was employed to determine whether there was any defect of colour vision in 29 confirmed male heroin addicts who had been successfully detoxified. Forty age‐matched males served as controls. A typical normal error score on the FM test is about 40 and an error score of over 100 indicates poor colour discrimination; 86.2% of the eyes of the control group had an error score below 100 while only 17.2% of the eyes of heroin addicts had an error score below 100. The colour confusion among the heroin addicts was in the blue‐purple (475–495 mu) range. These results indicate that colour vision defects are more common in heroin addicts.