Figure 3

Co-existence of cilioretinal artery (CA) and cilioretinal vein (CV). (A) Right fundus of the eye a 60-year-old woman shows a CV (arrow) at the upper nasal border of the optic disc. (B) Arterial phase of indocyanine green angiogram (ICGA) shows the CA (arrowheads) emerging from the upper-temporal pole of the optic disc (arrow). (C) Venous phase of ICGA shows a CV (arrowheads) running parallel to the CA and which exits at the upper-temporal border of the optic disc. A posterior vortex vein with ampulla is also visualized inferior to the optic disc. (D) Left fundus of the eye a 43-year-old woman with a CV (arrowheads). The CV exits at the superior border of the optic disc (arrow). (E) Arterial phase of ICGA shows a large CA (red arrowheads) serving nearly one-half of the upper fundus. The CA (arrow) originates from a short posterior ciliary artery (pink arrowheads). (F) Venous phase of ICGA shows a large CV (arrowheads) running parallel to the CA. The CV exits at the upper border of the optic disc (arrow). A posterior vortex vein drains close to the superior optic disc border can also be detected.