[1] Univ Ioannina, Dept Ophthalmol, Ioannina 45500, Greece
[2] Brighton & Sussex Univ Hosp NHS Trust, Sussex Eye Hosp, Brighton, E Sussex, England
[3] AHEPA Hosp, Univ Dept Ophthalmol 3, Thessaloniki, Greece
[4] Clin Novovis, Madrid, Spain
[5] Rey Juan Carlos Univ Hosp, Dept Ophthalmol, Madrid, Spain
[6] Aristotle Univ Thessaloniki, Univ Dept Ophthalmol 1, Thessaloniki, Greece
[7] Univ Alcala, Hosp Univ Principe Asturias, Dept Ophthalmol, Alcala De Henares, Spain