Prevalence of acquired discromatopsy and exposure to pesticides and ultraviolet solar radiation
DOI:
https://doi.org/10.17533/udea.rfnsp.13417Keywords:
Discromatopsy, plaguicides, solar ultraviolet radiation, Lanthony testAbstract
A cross sectional study was carried out to study the asociation between discromatopsy and exposure to plaaguicides, their solvents and solar radiation, and to evaluate the test of Lanthony as an aid to early detection of such anomaly. The prevalence of acquired disacromatopsy observed among 154 workers in a firm dedicated to flower cultivation was compared to the prevalence observed in 139 workers of a textile factory. The prevalence estimates were 59.1% and 50.4%, respectively, and their difference was not statisticaly significant. When the prevalence observed in the most exposed to plaguicides workers (60.3%) was compared to the that of the rest of participants (50%) a statisticaly significant diference was noted, showing a weak association. No interaction was detected beetween exposure and age, tobacco or alcohol consumption. Measurements done in the flower field showed that levels of ultraviolet B and C solar radiation exceeded the established threshold limits; however, no statistical difference was observed between the prevalence of discromatopsy in exposed and non exposed. In those workers of the flower business, no significant differences were observed in the prevalence by exposure time. A significant but minor difference was found when the Index of Cromatic Confusion was compared between the two exposed groups. It was concluded that the weak association detected was due, in part, to the combined effects of the low levels of exposure to plaguicides, inssufficient exposure time, and a more widespread culture of prevention.
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