Aqueous humor levels of cytokines are related to vitreous levels and progression of diabetic retinopathy in diabetic patients

Abstract
Cytokine levels are elevated in the ocular fluid of diabetic patients. It is unclear whether aqueous humor levels of vascular endothelial growth factor (VEGF) and interleukin-6 (IL-6) are related to the vitreous fluid levels of these substances and to the progression of diabetic retinopathy.