Dyschromatopsia in heroin addicts
- 13 February 1990
- journal article
- Published by Wiley in British Journal of Addiction
- Vol. 85 (2), 241-244
- https://doi.org/10.1111/j.1360-0443.1990.tb03077.x
Abstract
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.Keywords
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