Fig. 6. A. Archer's grade III retinal arteriovenous communication (racemose aneurysm) in a patient without the Wyburn-Mason syndrome. Visual acuity was 20/200 (6/60). B. Superotemporal branch retinal vein occlusion associated with a grade III retinal arteriovenous communication (racemose aneurysm), (A and B, courtesy of Jerry A. Shields, MD and Carol L. Shields, MD)