title: [Early detection of color blindness from the viewpoint of occupational medicine with various references to internistic and human genetic symptom complexes].
abstract: Vision screening tests within the limits of industrial medicine examinations, together with physical examinations, were done on human individuals by means of pseudo-isochromatic charts in order to detect "red-green blindness". The tests were carried out on 1589 individuals (males and females) from 10 medium-scale plants of the Saarbrücken area (Federal Republic of Germany). The results obtained from male individuals by 919 Ishihara-tests were only considered, categorized and graphically represented according to their age groups. The data have been collected from the cases examined mostly between the years 1976 to 1977. About 1500 cases were examined per year. Because the samples were not selected at random, one has to be cautious with regard to the statistical interpretations of the results. However, due to the large number of cases included in the study, it can be statistically represented. The histogram illustrating the distribution of colour-vision deficiency, according to each age group, shows the highest peak at an age range of 30 to 35 years. This indicates that a considerable number of cases with colour-vision deficiency was discovered late. The individuals have to be early examined by school physicians, house physicians, occupational physicians, internists or ophthalmologists with this colour-vision screening test, before they enter professional life. Some symptomatical complexes of internal diseases and human genetics, i.e. related to "colour-vision blindness" are also emphasized hemophilia and hemolytic anemia due to glucose-6-phosphate dehydrogenase deficiency.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D003119:Color Perception Tests; D003117:Color Vision Defects / Q000175:diagnosis / Q000453:epidemiology* / Q000235:genetics; D005260:Female; D005860:Germany, West; D006801:Humans; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D009786:Occupational Health Services
vernacular_title: Früherkennung der "Farbenblindheit" aus arbeitsmedizinischer Sicht mit einigen Hinweisen auf internistische bzw. humangenetische Symptomenkomplexe.