[Signs, therapy and follow-up of cases with pure blow-out fractures of the orbit (author's transl)].

30 patients with blow-out fractures were referred to our clinic because of serious "eye troubles", most frequently diplopia and haematoma of the eye lids (Table 1). The signs of the characteristic oculomotor imbalance are described. In 10 out of 29 patients motility was normalised spontaneously within 2 weeks. 19 patients underwent surgery because one of the following criteria was fulfilled: 1. Diplopia and positive traction-test not resolving within 10 days. 2. Large hermiation into the antrum. We believe, that posttraumatic diplopia is not only a result of the incarceration, but also of a direct laesion of muscles and connective tissue. Surgery was done by orbital approach. After reposition of antral prolaps and the bony fragment we used Lyodura or, when nessessary, silicon implants. In all patients treated in this way ocular motility was improved, but normalisation was achieved only in 8 cases (Fig. 8).