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Venn diagram representing each metabolic signature of diabetic eye disease in different subgroup populations vs. patients with no diabetic retinopathy (DR). DR included mild, moderate, severe, proliferative, and macular oedema, while SDR (severe diabetic retinopathy) comprised moderate to proliferative DR diagnosis and macular oedema (MO), PDR (proliferative diabetic retinopathy), or MO (macular oedema).
