Fig. 1

Montage of the fluorescein angiography images showing features of the junction between vascular and avascular retina in ROP patients treated with IVR: A Finger-like branching of vessels (arrowhead). B Circumferential vascular shunt at the junction (arrowhead). C Vascular leakage from terminal vessels at the junction area between vascular and avascular retina (dotted circle). D Blunted vascular terminal where the vessels ended abruptly in a stunted or blunted fashion, instead of the normal tapered endings (dotted line). E Popcorn vascular ending (arrowhead). F Finger-like anastomosis, where two adjacent terminal vessels anastomose at an apical point (arrowhead). G Areas of neovascularization at the junction between vascular and avascular retina (arrowhead)