We studied seven cases of Terson's syndrome, in association with bleeding in the subarachnoid space caused by rupture of vascular malformation or cranial traumatism. The association of rapid increase of intracranial pressure with subarachnoid hemorrhage could explain the development of a Terson's syndrome. The retinal hemorrhages associated with the vitreous hemorrhage are variable in morphology and topography. Pars plana vitrectomy has been performed in eight eyes with most often good results.