1. Second Department of Ophthalmology, Pomeranian Medical University in Szczecin, Powstańców Wielkopolskich 72, 70-111 Szczecin, Poland
2. Department of Ophthalmology, Independent Public Health Care Center of the Ministry of the Interior and Administration (SP ZOZ MSWiA), ul. Jagiellońska 44, 70-382 Szczecin, Poland