1. Department of Ophthalmology, Medical University of Silesia, Railway Hospital, Katowice, Poland
2. Department of Ophthalmology, Medical University of Silesia, Railway Hospital, Katowice, Poland 2Department of Biophysics and Molecular Physics, Institute of Physics, University of Silesia, Katowice, Poland
3. Department of Ophthalmology, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland 4Department of Ophthalmology, Kuopio University Hospital, Kuopio, Finland