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Biomedical subjects

I Süveges

Publications and source records attributed to I Süveges.

At least 19 recordsLinked to original sources
PubMed1992

[Examination of the orbit using a non-ophthalmologic ultrasound equipment].

Ophthalmic examinations were performed for determining the suitability of seven different types of non-ophthalmic ultrasound equipments for ophthalmological purposes. According to the results, the instruments with probes of 5 MHz or higher frequency are appropriate for certain screening ophthalmological purposes in hospitals where ophthalmic ultrasound instrument is still missing. The possible indications are: approximate estimation of axial eye length for intraocular lens calculation, and visualization of gross intraocular and orbital diseases, such as retinal detachment, tumours, foreign bodies etc. In case of pathological result or in case of axial eye length different from the average value, the high resolution ophthalmological ultrasound examination is mandatory. The modern colour-coded Doppler ultrasound equipments were found suitable for the examination of the circulation of the eye and orbit.

Eye Diseases↗
PubMed1992

Diffuse type alteration of the ocular wall in different eye diseases.

The ocular wall dimensions (thickness and volume) were measured by means of ultrasonography in 61 eyes of 61 patients with different eye diseases and 31 eyes of 31 healthy subjects with or without refractive error. The results confirmed, that in spite of the great variance in the ocular wall thickness, depending on the axial eye length, the volume of the ocular coats is constant in healthy eyes (ca. 1.65 cm3). In patients with ocular hypotony (eyes after intraocular surgery or trauma, and eyes with uveitis or with phthisis bulbi) and in patients with exophthalmus, the ocular wall was thicker and larger in volume than in the healthy control groups. In contrast, the ocular wall dimensions (thickness and volume) were smaller in patients with glaucoma. The results of the study showed that an alteration in the volume of the ocular wall implies a pathological condition of the eye, and thus ultrasound examination of the ocular wall dimensions might play a role in the diagnosis and in the follow-up of the patient.

Adolescent↗
PubMed1992

Sclerokeratoplasty in recurrent pterygium.

There are many methods for the treatment of recurrent pterygium, and lamellar keratoplasty seems to be the most effective of them. A new method has been developed for the surgical treatment of recurrent pterygium. The most important steps in the procedure are: total removal of the cicatrix and then covering the bare corneoscleral surface with a single piece of corneoscleral tissue taken from a cadaver bulb. The operation was carried out in 11 cases. The follow-up period varied from 10 months to 4 years, the average being 28.7 months. No recurrences were observed. Pseudopterygium developed following the ninth removal of the recurring pterygium; however, even 2 years after the operation, it did not reach the area of the pupil.

Corneal Transplantation↗
PubMed1988

Glaucoma capsulare in patients with open-angle glaucoma in Hungary.

The data of 403 inpatients with open-angle glaucoma were selected between 1977-1986, 155 had glaucoma capsulare (GC) and 248 suffered from primary open-angle glaucoma (POAG). The incidence rate of GC was 38.4% in the total material. In the GC group, the peak of age distribution was between the ages 70-79 (45.8%). The male/female ratio of the total GC material was 1.67, that in POAG was 0.85. The difference between the two glaucoma groups was significant.

Age Factors↗
PubMed1986

[The histopathology of keratoconus posticus circumscriptus].

The histopathology of keratoconus posticus circumscriptus is described. On the basis of electron microscopic studies a corneal development anomaly may be suspected. This hypothesis is also supported by the intercellular junctions (gap junctions) between the basal epithelial cells and the differences in the diameters of the collagen fibers (10-30 nm). The disturbance in fibrillogenesis is the result of stromal cell degeneration.

Adult↗
PubMed1979

Change of T-lymphocyte ratio after keratoplasty.

Changes in the ratio of active and total E rosettes of 12 untreated and 26 corneal transplant patients with immunosuppressive therapy were examined weekly for a month and in the third month. On the basis of our results it can be stated that keratoplasty increases immune reactivity. This manifests itself in the increasing number of both the active and total E-rosette-forming lymphocytes. This increase in T cell number can be observed also after cataract operations in the first week, but in the latter case if no rejection occurs after keratoplasty the ratio of E-rosette-forming cells returns to the preoperative value in the third week. If the T-lymphocyte number is increased as late as the third week, that can be regarded as a rejection sign. Our data confirm the significance of active E-rosette-forming cells in immunological processes. Examination of the active and total E-rosette-forming T-lymphocytes has proved a suitable method for following up the cellular immunological processes directed against the corneal transplant.

Adult↗
PubMed1979

Histological and ultrastructural studies of the cornea in Maroteaux-Lamy syndrome.

The author presents the histologic and electron-microscopic examination of the cornea of a patient with Maroteaux-Lamy syndrome. Histochemic examinations established the absence of keratin sulfate and heparin sulfate in the accumulated material. By means of electron microscopy three cell types have been found in the stroma which may show, besides the storage of the accumulated glycosaminoglycans, the morphologic signs of the pathologic enzyme-substrate connection. Considering the presence of the lipidlike material, the question arises whether the Maroteaux-Lamy syndrome belongs to mucolipidoses.

Child↗
PubMed1979

[Ultrastructural changes in keratoconus].

In case of keratoconus the epithelial cells are also participating in the pathological processes. Their activity of producing basal membrane is increased. In the stroma four cell types are found; two of them are normal elements. The origin of the two pathological forms is unknown. They may represent as well vagrant cells. Or they originate perhaps from the endothelial cells, being more or less modified. The original endothelial cells are mostly destroyed. In all sorts of the corneal cells one sees abundantly enlarged mitochondria.

Cornea↗