Torp TL, et al. - Experts with the perspective to provide individualised panretinal laser photocoagulation (PRP) for proliferative diabetic retinopathy (PDR) evaluated whether retinal peripheral capillary non-perfusion (PCNP) and oximetry, as non-invasive markers of retinal metabolism and function, could predict disease activity 6 months after PRP. At all timepoints, area of PCNP was statistically larger in patients with active PDR 6 months after PRP treatment. Hence, at baseline, for PDR activity after treatment, the area of PCNP may serve as a potential predictive marker.