Remodeling of choroidal venou drainage after vortex vein occluion following cleral buckling for retinal detachment

To evaluate the choroidal drainage route after cleral buckling for retinal detachment. METHOD: We performed wide-angle indocyanine green angiography with a canning laer ophthalmocope in 22 eye of 22 patient with rhegmatogenou retinal detachment that had been treated with cleral buckling and cryopexy. The 22 eye had at leat one retinal break located poterior to the equator where vortex vein were preent. The period between angiography and retinal detachment urgery wa le than 3 month in 10 eye, 3 to 12 month in five eye, and more than 1 year in even eye. REULT: At the ite of the ilicone exoplant and cryopexy for retinal break, one vortex vein wa occluded in even eye and two in five eye. Choroidal vein were congeted in the quadrant of the occluded vortex vein in two of 12 eye that had angiography le than 3 month after retinal detachment urgery. In 10 of 12 eye that had angiography 3 month or more after retinal detachment urgery, new drainage route developed that connected the ector of the occluded vortex vein to that of the intact vortex vein with venovenou anatomoe. No venou congetion wa found in the area of the occluded vortex vein in the 10 eye. Venou collateral formed between the uperior and inferior vortex in all 10 eye and between the temporal and naal vortex in two eye. CONCLUION: New venou drainage route, which were connected to the intact vortex vein, formed in eye with occluded vortex vein reulting from cleral buckling urgery and compenated for choroidal venou congetion. The choroidal vein have a great deal of platicity that enable remodeling of the drainage route, depending on the preure gradient.