Carlo Traverso, Ophthalmology Director at IRCCS Ospedale Policlinico San Martino and Full Professor at Università di Genova, Genova, Italy, and Ananth Viswanathan, Consultant Surgeon and Full Professor at UCL Institute of Ophthalmology and Moorfields Eye Hospital, London, United Kingdom, answer this question.

Marta Pazos, Glaucoma Consultant and Head of the Ophthalmology Department at Hospital Clinic of Barcelona, and Associate Professor at Universitat of Barcelona, Barcelona, Spain, answers this question.

Augusto Azuara-Blanco, Consultant at Belfast Health and Social Care Trust and Clinical Professor at the School of Medicine, Queens University Belfast, Belfast, United Kingdom, and Marta Pazos, Glaucoma Consultant and Head of the Ophthalmology Department at Hospital Clinic of Barcelona, and Associate Professor at Universitat of Barcelona, Barcelona, Spain, answer this question.

Stelios Georgoulas, Consultant Eye Surgeon at Cambridge University Hospital, Cambridge, United Kingdom, answers this question.

Gauti Jóhannesson, Chief Physician and Glaucoma Consultant at St Eriks Eye Hospital in Stockholm and Associate Professor at Umeå University, Sweden, and Miriam Kolko, Professor, Department of Drug Design and Pharmacology, University of Copenhagen; Senior Consultant, Copenhagen University Hospital and Aalborg University Hospital; Head of Clinic, Eye Hospital “Your Eye Doctors”, answer this question.

Rupert Bourne, Consultant and Professor at the Department of Ophthalmology, Cambridge University Hospitals, and Vision and Eye Research Institute, Anglia Ruskin University, Cambridge, United Kingdom, and Sanna Leinonen, Ophthalmologist at Tays Eye Centre and Ophthalmology Professor at the Faculty of Medicine, Tampere University, Tampere, Finland, answer this question.

João Breda, Ophthalmologist at ULS São João and Ophthalmology Professor, Faculty of Medicine of Porto, Porto, Portugal, answers this question.

Panayiota Founti, Senior Research Associate and Consultant Ophthalmic Surgeon at UCL Institute of Ophthalmology and Moorfields Eye Hospital, London, United Kingdom, and Carlo Cutolo, Ophthalmology at IRCCS Ospedale Policlinico San Martino and Professor of Ophthalmology at DiNOGMI, Università di Genova, Genova, Italy, answer this question.

Frances Meier-Gibbons, Emeritus leader of the Eye Center, Rapperswil, Switzerland, and Karl Mercieca, Consultant and Head of the Glaucoma section, Eye Clinic at University of Bonn, Bonn, Germany, answer this question.

Augusto Azuara-Blanco, Consultant at Belfast Health and Social Care Trust and Clinical Professor at the School of Medicine, Queens University Belfast, Belfast, United Kingdom, and Anthony King, Professor and Consultant, Medical School, University of Nottingham, Nottingham, United Kingdom, answer this question.

Anthony Khawaja, Professor and Honorary Consultant Ophthalmic Surgeon at UCL Institute of Ophthalmology and Moorfields Eye Hospital, London, United Kingdom, and Luis Abegão Pinto, Professor at the Faculty of Medicine of Lisbon University and Head of the Glaucoma Unit, ULS Santa Maria, Lisbon, Portugal, answer this question.

Gauti Jóhannesson, Chief Physician and Glaucoma Consultant at St Eriks Eye Hospital in Stockholm and Associate Professor at Umeå University, Sweden, answers this question.

Esther M Hoffmann, Full professor, Head of Glaucoma Department and Head of German Childhood Glaucoma Center Department of Ophthalmology at University Medical Center Mainz, Germany, answers this question.

Francesco Oddone, Head of the Glaucoma Unit, IRCCS Fondazione Bietti, Rome, Italy, answers this question.

Marta Pazos, Ophthalmologist, glaucoma specialist. Hospital Clínic Barcelona, Barcelona, Spain, answers this question.

Andrew Tatham, Ophthalmologist, Consultant Ophthalmic Surgeon, Princess Alexandra Eye Pavilion, Edinburgh, United Kingdom, answers this question.

Frances Meier-Gibbons, Leading ophthalmologist and glaucoma specialist Eye Center Rapperswil, Switzerland, answers this question.

Anthony Khawaja, Associate Professor and Honorary Consultant Ophthalmic Surgeon at UCL Institute of Ophthalmology and Moorfields Eye Hospital, London, UK, answers this question.

Verena Prokosch, Professor for Clinical and Experimental Glaucoma,University of Cologne, Germany, answers this question.

Miriam Kolko, Professor in Translational Eye Research and Chief Physician, University of Copenhagen (Denmark), answers this question.