[Incidence and the progression of the acute-phase of the retinopathy of prematurity in infants hospitalized in Neonatology Department of University of Medical Sciences in Poznań].

Purpose: The assessment of the epidemiological data of acute-phase of retinopathy of prematurity (ROP).

Material And Methods: Infants with birth weights less than 1500g and birth dates between April 1, 2002, and May 30, 2003, admitted to special care baby unit in Department of Neonatology in Poznan, were examined. The incidence of retinopathy of prematurity, infants sex, multiple births, the onset of acute-phase ROP (considering the day of life and postmenstrual age) and also the day of life, at which the treatment was started, were analysed.