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Fig. 2 | BMC Ophthalmology

Fig. 2

From: Treatment responses for branch retinal vein occlusion predicted by semi-automated fluorescein angiography quantification

Fig. 2

Representative fluorescein angiography (FA) images before (A – I) and after (J – R) anti-VEGF treatment. A, FA images at 1 min. B, K FA images at 5 min. Large and small squares demarcated by yellow dashed line denote the locations of the perifoveal and parafoveal images, respectively. C, L Binarized FA images of perifoveal area at 1 min. The yellow crosses indicate the location of the foveal centers. D, M Binarized FA images of the perifoveal area at 5 min. E, N Perifoveal images after subtracting the image at 1-min from the image at 5-min . The mean gray value over the perifoveal region was 24.3 before treatment and 2.4 after treatment. F, O Binarized FA images of the parafoveal area at 1 min. G, P Binarized FA images of the parafoveal area at 5 min. H, Q Parafoveal images after subtracting the image at 1-min from the image at 5-min. The mean gray value over the parafoveal region was 27.9 before treatment and 1.2 after treatment. I, R The Central retinal thickness (CRT) on optical coherence tomography (OCT) was 383 μm before treatment and 276 μm after treatment

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