Concentration of Vascular Endothelial Growth Factor in the Subretinal Fluid of Retinal Detachment

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Abstract
The purpose of this study was to investigate the release of vascular endothelial growth factor (VEGF) within the subretinal fluid in eyes with retinal detachment. Subretinal fluid was collected from patients with retinal detachment undergoing surgery for scleral buckling. Serum samples were also collected. The concentration of VEGF in the subretinal fluid and serum was investigated by enzyme-linked immunospecific assay. The average concentration of VEGF in serum samples was 168±153 pg/ml (mean±standard deviation). It was lower than the VEGF concentration in the subretinal fluid (485±570 pg/ml) in the same 18 patients with retinal detachment (p<0.05). The average concentration of VEGF was 355 ±373 pg/ml in 31 samples of the subretinal fluid collected from simple rhegmatogenous retinal detachment. It was lower than the average concentration of 901 ±385 pg/ml in 8 samples of the subretinal fluid from retinal detachment with proliferative vitreoretinopathy (p<0.05). The results suggest that the relative retinal ischemia in detached retina increases the release of VEGF into the subretinal space. Also, the concentration of VEGF within the subretinal fluid in proliferative vitreoretinopathy was higher than in simple rhegmatogenous retinal detachment.