Comparison of Treatment Regimens Using Ranibizumab: Intensive (Resolution of Intra- and Sub-retinal Fluid) vs Relaxed (Resolution of Intra-retinal Fluid and/or Sub-retinal Fluid >200µm at the Foveal Centre)

To evaluate and compare two individualised ranibizumab treatment regimens, differentiated by the definition of disease activity, which determines the treatment interval until the next injection. The results will be used to generate recommendations about ranibizumab treatment when using an 'inject and extend' approach to maximise patient outcomes, while reducing the need for potentially unnecessary intravitreal injections. This study will also investigate if genotypic expression influences response to intravitreal injections of ranibizumab between the two treatment arms. The study hypothesis is that intravitreal ranibizumab when administered to resolve IRF (and/or SRF \>200 μm at the foveal centre) results in visual acuity benefit that is not clinically worse than intravitreal ranibizumab when administered to completely resolve both IRF and SRF in patients with wet AMD