Vitreous levels of interleukin-6 and vascular endothelial growth factor are related to diabetic macular edema

To investigate whether interleukin-6 (IL-6) or vascular endothelial growth factor (VEGF) is related to diabetic macular edema (DME) in subjects without posterior vitreous detachment (PVD).Retrospective case-control study.Twenty-six subjects who had DME without PVD and 12 subjects who had nondiabetic ocular disease (the control group).Vitreous fluid samples were obtained at vitreoretinal surgery, and the IL-6 and VEGF levels in vitreous fluid and...