Fig. 2

A slight reduction in vascular density in the superficial capillary plexus (SCP) and DCP can be seen on optical coherence tomography angiography (OCTA) of the affected eye (A1, B1). En face OCT segmented at the SCP level demonstrates mild hyperreflectivity around the area corresponding to the distribution of cilioretinal artery occlusion due to globular PAMM (A2). The DCP slab exhibits the projection artifact of superficial vessels (B1). En face OCT segmented at the DCP level demonstrates a diffuse hyperreflective area corresponding to the distribution of cilioretinal artery occlusion due to globular PAMM (B2), as well as small wedge-shaped hyperreflective areas surrounding the fovea corresponding to radial hemorrhages in the Henle fiber layer (green arrow). Additionally, fern-like perivenular hyperreflective lesions are seen in the inferior portion of the fovea in the region affected only by venous occlusion, consistent with fern-like PAMM (red arrow). B-scan SD-OCT demonstrates a slight increase in retinal thickness, as well as a diffuse hyperreflective band above the fovea in the area of CILRAO, which involves both the superficial and middle retinal layers (C), whereas the lesion’s lower border appears hyperreflective only in the middle retinal layer, consistent with PAMM (D). In the Henle fiber layer, a teardrop-shaped hyperreflectivity heading toward the foveal center is visible, matching to the radially oriented hemorrhage in the fundus photograph (E). SD-OCT B-scan from the inferior fovea demonstrates a dispersed hyperreflective band in the middle retinal layer, which corresponds to the region with fern-like perivenular PAMM in en face OCT (F)