[Hemophthalmos and posterior detachment of the vitreous body (an ultrasonic study)].

A total of 133 patients with hemophthalmos and its aftereffects have been examined with the use of a digital processing gray scale ultrasonic B-scanner. Posterior detachments of the vitreous body (PDVB) have been revealed in 45 (33.8%) patients. In half of these patients the hyaloid membrane has been found bound to the optic disk or to the retina; this bond indicates the site of the hemorrhage from the injured vessel. V-shaped PDVB, connected with the optic disk, may be difficult to differentiate from a detachment of the retina. Three major factors should be borne in mind in such a differential diagnosis: the amplitude of the echo signal, the detachment topography and mobility. In 5 patients PDVB were combined with detachments of the retina. In 9 case PDVB have been a consequence of a retrovitreal hemophthalmos.