1. Department of Ophthalmology; School of Medicine with the Division of Dentistry in Zabrze; Medical University of Silesia; Katowice Poland
2. Chair and Department of Physiology; School of Medicine in Katowice; Medical University of Silesia; Katowice Poland
3. Department of Biophysics and Molecular Physics; Institute of Physics; University of Silesia; Katowice Poland
4. Department of Ophthalmology; University of Eastern Finland; Kuopio Finland
5. Department of Ophthalmology; Kuopio University Hospital; Kuopio Finland
6. Department of Experimental Medical-Surgical Sciences; Ocular Surface Diseases Unit; University of Messina; Messina Italy