Kowal, Małgorzata, Magdalena Kowalska, Katarzyna Wójtowicz-Chomicz, Barbara Dyka, and Andrzej Borzęcki. 2009. “Eyesight Diseases Incidence Among Inhabitants of Ostrowiec Świętokrzyski Ond the Region”. Polish Journal of Public Health 119 (1): 68-70. https://czasopisma.umlub.pl/pjph/article/view/2198.