Studies, Rodents, Hyperglycemia - pathology, Hyperglycemia - metabolism, Oxidative Stress - drug effects, Epithelial Cells - drug effects, Epithelial Cells - metabolism, Retina - metabolism, Signal Transduction - drug effects, Epithelial Cells - pathology, Vascular Endothelial Growth Factor A - genetics, Vascular Endothelial Growth Factor A - metabolism, Ant...