1. Health Promotion and Obesity Management Unit, Department of Pathophysiology, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland
2. Department of Ophthalmology, Wylegala Medical Center, Katowice, Poland
3. Ophthalmology Department, Railway Hospital, II School of Medicine with the Division of Dentistry, Zabrze Medical University of Silesia, Katowice, Poland