MDM2 and proliferative diabetic retinopathy: CN: Healthy Controls, DR: Diabetic Retinopathy, HWE: Hardy-Weinberg Equilibrium, MDM2: Mouse Model Minute 2, NPDR: Non-Proliferative Diabetic Retinopathy, PDR: Proliferative Diabetic Retinopathy, T2D: Type 2 Diabetes, VEGFA: Vascular Endothelial Growth Factor