Effectiveness of Multimodal imaging for the Evaluation of Retinal oedema And new vesseLs in Diabetic retinopathy (EMERALD) Autor Lois, N, Cook, J, Aldington, S, Waugh, N, Mistry, H, Sones, W, McAuley, D, Aslam, T, Bailey, C, Chong, V, Ghanchi, F, Scanlon, P, Sivaprasad, S, Steel, D, Styles, C, McNally, C, Rice, R, Prior, L, Azuara-Blanco, A, Emerald Study Group