[1] Oxford Univ Hosp NHS Fdn Trust, Oxford Eye Hosp, Oxford, Oxon, England
[2] Univ Oxford, Nuffield Lab Ophthalmol, Nuffield Dept Clin Neurosci, Oxford, Oxon, England
[3] Heidelberg Univ, Dept Ophthalmol, Heidelberg, Germany
[4] Univ Klinikum Hamburg Eppendorf, Dept Ophthalmol, Hamburg, Germany