Purpose: Retinociliary vein, which is a shunt vessel on the edge of the optic disc from the retinal vein to the choroidal circulation, has not been reported in cases of high myopia. We present detailed observations of four eyes of three consecutive cases with retinociliary vein in high myopia using indocyanine green angiography (ICGA).
Subjects and method: In total, 504 patient with 956 highly myopic eyes were enrolled, we used color fundus photography to find the retinociliary vein and ICGA to observe the concurrent cases in detail.
Results: A total of five retinociliary veins were observed in four eyes of three patients (0.4%). Communication between retinal and choroidal veins was observed in three of five retinociliary veins on ICGA. Three eyes also had macular vortex veins, to which two of five retinociliary veins were connected. All retinociliary veins were connected to the choroid outside the optic nerve head in the conus.
Conclusion: It was indicated that various collateral circulations between the retina and the choroid are formed around the optic nerve head in pathologic myopia.
Nippon Ganka Gakkai Zasshi (J Jpn Ophthalmol Soc) 121: 755-760, 2017.