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Fig. 2 | BMC Ophthalmology

Fig. 2

From: Assessment of diabetic retinopathy using two ultra-wide-field fundus imaging systems, the Clarus® and Optos™ systems

Fig. 2

Comparison of obscured retinal area in ETDRS 7-field area. a ETDRS 7-field cropped from an Optos® image. b ETDRS 7-field cropped from a Clarus™ image. The blue line circles in (a) and (b) show the ETDRS 7-field. The number in (a) and (b) indicate the number of the ETDRS 7-field. The yellow dotted lines in (a) show the obscured area. c Obscured total retinal area was significantly greater in Optos® images than in Clarus™ images (4.15 ± 4.00% vs. 0.47 ± 1.87%, ***P < 0.001). ETDRS: Early Treatment of Diabetic Retinopathy Study

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