[The damage "before" and the damage "afterwards" in industrial-noise deafness (author's transl)].

The industrial noise-deafness is often combined with other hearing-impairments. For the "MdE" (reduction of work capacity)--assessment, the expert has not only to think about the pure medical differential diagnosis, but also about juridical relationships and the damage "before" and "afterwards". In this study definitions of the damage "before" and "afterwards" and principles for consideration of MdE-measurements are given. The opinion is represented, that the damage "before" is not only the disease, which existed before noise-exposition. But, the important date for judgement is the occurrence of the event insured. Questions about the over-all judgement for limitable and unlimitable forms of hearing-impairment are explained by examples from the experts experience.