999 patients with glaucoma (G) visited the office from the beginning of 1980 until the end of 1991. 381 patients with disc haemorrhages and 164 with thrombosis (T) were found and followed when possible. At the detection 17 cases with thrombosis and 41 cases with disc haemorrhage (H) had glaucoma. During follow-up 52 cases with glaucoma got a thrombosis and 26 cases with thrombosis developed glaucoma, 105 cases with glaucoma got a disc haemorrhage and 33 cases with disc haemorrhage developed glaucoma. At the end of the follow-up 179 cases with glaucoma have had a disc haemorrhage, and 95 have had a thrombosis. In this material disc haemorrhages and thromboses, both thromboses of a branch (TB) and thromboses of the central vein (TC), behaved in the same way with respect to the occurrence of glaucoma, and the hypothesis that the materials H, TB or TC are of similar origin and symptoms of glaucoma seems reasonable.