1. Department of Ophthalmology, “Korgialenio-Benakio” Red Cross Hospital, Athens, Greece
2. 2nd Department of Ophthalmology, National and Kapodistrian University of Athens, Athens, Greece
3. Eye Institute of Thrace, Democritus University of Thrace, Alexandroupolis, Greece
4. Department of Neurology, Democritus University of Thrace, Alexandroupolis, Greece