Biomedical subjects
H Slezak
Publications and source records attributed to H Slezak.
[Topical anesthesia].
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[Vitreous body hemorrhage in intermediary uveitis].
Sometimes recurrent vitreous hemorrhages occur during the course of intermediary uveitis. As a rule, hemorrhages from newly-formed vessels immediately behind the posterior margin of the vitreous base ( juxtabasal vasoproliferations ) progress subhyaloidally toward the posterior pole and invade the vitreous gel through the prefoveal hole of the detached posterior hyaloid membrane. On the other hand, weak juxtabasal hemorrhages cause only a circumscribed flat peripheral detachment of the vitreous body and ooze locally into the vitreous gel. Therefore, hemorrhages within the anterior part of the vitreous body in intermediary uveitis do not always originate from newly formed vessels within the vitreous base, but sometimes from juxtabasal vasoproliferations .
[Configuration of the tractus vitreales in rhegmatogenous posterior detachment of the vitreous body].
Subhyaloid prolapse of the vitreous gel in rhegmatogenous posterior detachment of the vitreous body invariably results in a change in the position of the funnel-shaped vitreal membranules : The membranules are not directed toward the optic disk as usual, but pass the prefoveal hole of the detached posterior hyaloid membrane and end within the subhyaloidally prolapsed vitreous gel. In addition to this typical configuration of the vitreal membranules in rhegmatogenous posterior detachment of the vitreous body, there exists a second, rare form of subhyaloid prolapse of vitreous gel with bump-like deformation of the vitreal membranules : The last ones balloon through the prefoveal hole into the retrovitreal space but typically end intravitreally in front of the optic disk.
[Eye symptoms in general diseases].
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[Cornea pseudoguttata].
Cornea pseudoguttata is the term applied to a temporary, completely reversible lesion of the corneal endothelium during inflammations of the anterior segment of the eye. The posterior specular area of the cornea reveals numerous, partially confluent, dark holes of different sizes. At examination with the specular microscope these holes correspond to intra- and intercellular changes in the endothelial mosaic. It appears that the clinical picture of cornea pseudoguttata is caused by both the edema of the endothelial cells and the looseness of the structure of the endothelial layer due to inter- and subcellular accumulations of fluid.
[Drug-induced eye lesions in the aged].
Occasionally, undesired side effects of drugs occur in different ocular structures. The author reports on respecting lesions of lacrimal apparatus, conjunctive and cornea, lens, retina, and optic nerve; finally, the influence of different drugs on the intraocular pressure is discussed.
[Working at a cathode-ray tube screen. Effects on health and their prevention].
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[Vasoproliferative intermediary uveitis (author's transl)].
Dust-like opacities of the vitreous body are the main feature of all types of intermediary uveitis. In addition recurrent vitreous hemorrhages occasionally occur. They mark the vasoproliferative form of the inflammation and originate from different regions of the posterior segment of the eye; their distribution sometimes enables conclusions to be drawn concerning the site of the vasoproliferation.
[Dialysis of the ora serrata and retina].
Meticulous examination of vitreal and retinal structures in the area of dialysis provides the basis for classification of the different kinds of dehiscences; also, conclusions can be drawn concerning pathogenesis and prognosis. Findings are discussed.
[Intrabulbar and peribulbar reactive lymphoid hyperplasia].
Report on a 69-year-old woman with a choroidal and a large peribulbar tumor. A scan ultrasonography of the peribulbar mass revealed a homogeneous structure of the lymphoma/sarcoma/pseudo-tumor type. Histological examination disclosed a reactive lymphoid hyperplasia without "Dutcher bodies", and consistent with a benign lymphoma.
[Circumscribed peripheral (equatorial or pre-equatorial) retinoschisis (author's transl)].
Circumscribed areas of retinoschisis along or anterior to the Equator occur mainly in elderly subjects. Diagnosis is based on biomicroscopic criteria.
Benign adenoma of the ciliary epithelium with tumour seeding.
Report on a benign epithelioma of the ciliar body which caused cataract and dislocation of the lens in a 44-year-old woman. Tumour seeding was a remarkable finding, and is a result of disruption of the epithelial lining due to active production of mucopolysaccharides by tumour cells.
[Discrete inflammatory manifestations of the posterior eye segment (author's transl)].
White eyes with cellular infiltration of the vitreous body are common with inflammations of the posterior eye segment. In mild course of the disease the local signs in the regions of inflammation are discrete; under these circumstances recurrences and remissions of the inflammation may be difficult to be differentiated. Several types of such an inflammation are described.
[Differential diagnosis of the juxtapapillary racemose hemangioma (author's transl)].
The racemose hemangioma sometimes resembles the retinal angiogliomatosis and the retinal and pigment epithelium hamartoma. Dirty gray opacity and hypervascularity of the juxtapapillary retina are the common symptoms, the variety of the hypervascularity as well as the condition of the pigment epithelium make the different features.
[Recent advances in examination of the fundus (author's transl)].
Morphological examination of the fundus has improved considerably over the past decade. By means of identation biomicroscopy, hitherto inaccessible, extremely-peripheral areas of the fundus can be examined by the slit lamp now; this of importance in the study of intraocular inflammation and the judgement of retinal tears along the ora serrata. Fluorescein angiography has provided important findings recently in cases of disturbed retinal blood circulation, in lesions of Bruch's membrane and of pigment epithelium and in pathological changes of the optic disc. The advances in fundal examination achieved over the past years are based essentially upon indentation biomicroscopy and fluorescein angiography.
[Problems of photocoagulation in simple diabetic retinopathy (author's transl)].
The simple (exudative) diabetic retinopathy remains often spontaneously benign for long time. Therefore advantages and disadvantages of the photocoagulation in such cases must be weighed against each other very accurately. Appropriate therapeutic recommendations are given.