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Technique for chorioretinal venous anastomosis described

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KYOTO — Surgical interruption of an affected vein in central retinal vein occlusion is feasible and could raise the rate of success in chorioretinal venous anastomosis, a small study found.

Surgeons here performed a vitrectomy accompanied by a chorioretinal venous anastomosis procedure for seven consecutive patients with central retinal vein occlusion (CRVO). The procedure included the complete cutting of the affected vein and the making of a small incision at both sides of the vein interruption through the full thickness of the retina, the retinal pigment epithelium and Bruch’s membrane.

Five of the seven patients achieved successful chorioretinal venous anastomosis. All five patients showed an improvement of two or more lines in visual acuity 6 months postoperatively. In 60% of those patients, visual acuity of 20/100 or better was achieved.

The study is published in Graefe's Archive for Clinical and Experimental Ophthalmology.