Fig. 2From: Chronic sildenafil citrate use decreases retinal vascular endothelial growth factor expression in diabetic rats: a pilot study VEGF levels in the vitreous body of the study groups by ELISA This chart graph demonstrates the highest VEGF concentration observed in group II was significantly higher than all other groups. VEGF was significantly reduced in the rats with oral sildenafil. Furthermore, the reduction of VEGF by sildenafil was dose dependent with significantly lower concentration in rats using higher sildenafil dose reaching a level not significantly different from control groupBack to article page