1 Department of Ophthalmology, University of Warmia and Mazury, Olsztyn, Poland; Institute for Research in Ophthalmology, Foundation for Ophthalmology Development, Poznań, Poland. Electronic address: ae.grzybowski@gmail.com.
2 Department of Ophthalmology, Kymenlaakso Central Hospital, Kotka, Finland; Helsinki Retina Research Group, Faculty of Medicine, University of Helsinki, Helsinki, Finland.