Fig. 4From: Optical coherence tomography angiography characteristics of optic disc melanocytomaPerfusion density comparisons in the control group and ODMC group in areas centered in the optic disk. a Perfusion density comparison of the total areas; (b) Comparison of the perfusion density between the control group and ODMC groups in 9 single areas.****compared with the previous stage, P < 0.0001. IR, inner ring; OR, outer ringBack to article page