RETINAL detachment or the appearance of retinal cysts after the occlusion of large retinal vessels has rarely been described in the literature, although Duke-Elder (1940) mentioned cystic degeneration as invariably following obstruction of the central retinal vein. Norn (1961) described a case of a central retinal cyst which followed a thrombosis of the central retinal vein. Arques (1960) repor...