D.D.S.acknowledges Peijun Gong from whom he has especially benefitted in studying OCTA.D.M.S.and D.D.S.acknowledge Gavrielle Untracht for her recent work on OCTA.D.M.S.acknowledges Andrzej Kowalczyk,Iwona Gorczynska,and Maciej Szkulmowski for their mentoring in OCTA research and Christian Heiss for mentoring in microvascular biology and medicine.D.M.S.acknowledges Emily Farran,Tibor Auer,and Marta Topor for their guidance in Open Research.R.J.Z.acknowledges Dae Yu Kim,Iwona Gorczynska,Justin V.Migacz,and John S.Werner for their joint contributions to the OCTA research at UC Davis Vision Science and Advanced Retinal Imaging(VSRI)Laboratory.A.M.D.acknowledges the support of the National Institute for Health Research(NIHR)Biomedical Research Centre based at Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology.F.K.C.is supported by the Australian National Health&Medical Research Council(project and fellowship grant no.:GNT1116360,GNT1188694,GNT1054712,and MRF1142962),the Raine Foundation,Ophthalmic Research Institute of Australia,and the McCusker Charitable Foundation for his and his team's work in OCTA. （VSRI）