[Determination of far vision with DIN 58220 (criterion 6/10): computer vision test with high resolution monitor in comparison with vision charts].

Background: The results of nearly automated computerized determination of visual acuity by PC are compared to those of card measurements. The introduction of a new measuring technique should not change the dimension--visual acuity--itself, therefore there should be no difference between the results of the conventional technique and those of the PC.

Methods: Both methods were tested in a group of subjects (N = 100) with vision between 0.

[Choroid melanoma. A retrospective randomized comparative study of ruthenium irradiation vs enucleation].

A randomized retrospective study concerning survival of Ruthenium treatment and enucleation in melanoma patients has been performed. For 112 patients from Hamburg who underwent Ruthenium therapy individual match partners were selected in Copenhagen where during the same period of time enucleation was the standard procedure. Selection took place concerning patient's age and sex at the time of treatment, initial tumor volume and the time of treatment.

[Onchocerciasis infection following temporary stay in endemic areas].

We report the clinical picture of an European female patient, who suffered from Onchocercosis after a 4 year stay in endemic areas in Africa. The diagnosis was based on repeated skin-snips. Despite two courses of systemic chemotherapy, initial corneal changes could be observed as peripheral superficial stroma infiltrations.

[Progress in early detection and follow up of glaucoma].

The importance of Hans Goldmann's contributions to clinical tonometry is discussed in detail. One example is the principle of an applanation diameter of 3.06 mm, which was established by him and is still the basis for the various methods of clinical tonometry today.

[Penetrating keratoplasty--indications with special reference to artificial lens keratopathy].

During the period from 1980 until the beginning of 1986, 1,219 corneal buttons removed in the course of penetrating keratoplasty were histologically examined. In 16.5% (201 cases) a re-keratoplasty was necessary.

[Diplopia, enophthalmos and motility disorders in isolated orbital floor fractures].

In cases of pure blow-out fracture with unequivocal clinical symptoms (limitation of movement of the globe, dislocation and/or enophthalmos) and confirmed X-ray findings, early surgery is the treatment of choice. In cases where the clinical findings are less pronounced, a "wait-and-see" policy, keeping the patient under observation, seems appropriate for the sake of avoiding surgical trauma. Coronal computerized tomography offers advantages in cases where the diagnosis is questionable.

[Attempt at preoperative differentiation of malignant melanoma of the choroid. A comparison of nuclear magnetic resonance tomography, ultrasound echography and histopathology].

In a large choroidal melanoma (prominence 12 mm, volume approx. 1,900 mm3) diagnostic sonography revealed an unusual compartmentation, corresponding to the internal reflectivity of the tumor. When NMR imaging was performed, marked differences in signal behavior were seen between the tumor's center and its periphery.