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This study aimed to investigate the concentrations of vascular endothelial growth factor (VEGF) and platelet-derived growth factor (PDGF) in vitreous and serum samples, analyze the ratio, and compare among proliferative diabetic retinopathy (PDR) subgroups.

clinical ophthalmology

&lt;p&gt;Vitreous and Serum Concentrations of Vascular Endothelial Growth Factor and Platelet-Derived Growth Factor in Proliferative Diabetic Retinopathy&lt;/p&gt;