Figure 3: Ultrasonography, OCT, and CDFI in case 3. A A dome shaped lesion of 1.5mm × 3mm with a smooth high reflective outline and low inside reflections was found on the middle peripheral wall of 4:30 o’clock by ultrasound examination. B Spectral domain OCT confirmed a lesion of elevated neuralretinal layer and the retinal pigmental epithelial layer in the lower temporal fundus. The RPE layer was intact and no bleeding, exudation, edema, or CNV were found. C A signal of vein flow with a velocity of 2.63cm/s was found by CDFI.