EN
Group of 529 patients, inhabitants of Szczecin, was examined for the presence of Demodex spp. in eyelid hair follicles. The incidence of infestation increased with age. High extensity of infection by Demodex spp. - 44%-86% - was noted in age groups: 17-25, 26-34 and over 35 years. In group of subjects 26-34 years and older were noted 46%-80% of symptomatic infestation cases.