Fig. 5From: Risk factors of internal carotid artery stenosis in patients with proliferative diabetic retinopathy: an analysis using optical coherence tomography and optical coherence tomography angiographyReport sample of the measurement of the retinal nerve fiber layer (RNFL) with OCT. (A) The four main regions of the RNFL. (B) RNFL thickness of four regionsBack to article page