Fig. 1From: Correlation of biomarkers thiobarbituric acid reactive substance, nitric oxide and central subfield and cube average thickness in diabetic retinopathy: a cross-sectional study a Horizontal cross section scan of spectral domain optical coherence tomography illustrating diabetic macular edema (yellow arrow). b Color coded internal limiting membrane-retinal pigment epithelium thickness overlay map of 6X6 square mm macular cube. c Early treatment diabetic retinopathy study (ETDRS) grid map with numerical data for central subfield retinal thickness within innermost circle (red arrow) as well as average macular thicknessBack to article page