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Biomedical subjects

I Scheimbauer

Publications and source records attributed to I Scheimbauer.

8 recordsLinked to original sources
PubMed1981

[A new classification scheme of non-proliferative diabetic retinopathy (author's transl)].

The correlation of the topography of certain areas of the fundus, which exhibit relentless progression of microangiopathy (within the framework of general fluctuations in the course of the disease), as well as the degree of predominance of capillary perfusion and permeability disturbances in these respective areas justifies a classification of non-proliferative diabetic retinopathy into three distinct types: (1) pre-maculopathy/maculopathy in non-proliferative diabetic retinopathy (DR), (2) nonproliferative DR, and (3) non-proliferative DR lacking a tendency towards vasoproliferation or maculopathy. These results are based on regular biannual angiographic examinations of six different standard fundus areas in a total of 365 patients with non-proliferative DR. This scheme of classification has prognostic as well as therapeutic consequences.

Capillary Permeability↗
PubMed1981

[Excision of the ciliary body (Sautter procedure) as a last resort in secondary glaucoma (author's transl)].

Within the past five years we have performed excision of one quadrant of the ciliary body (pars plicata) (e.c.b.) in 22 eyes with secondary narrow-angle glaucoma. Prior to e.c.b. numerous surgical procedures for glaucoma had been attempted. Sixteen of the eyes were aphakic, six phakic. In nine eyes secondary angle closure was due to rubeosis iridis. The observation period following e.c.b. averaged 27.4 months. The preoperative tensions ranged between 40 and 50 mmHg. In 12 out of 22 eyes e.c.b. alone was sufficient to lower the intraocular pressure permanently; in seven cases local therapy (Timolol, Eppystabil) and/or oral Diamox respectively had to be added. Two eyes became atrophic and blind between one and 1.5 years following e.c.b.

Adolescent↗
PubMed1980

[Suturing technic in penetrating keratoplasty--comparative study].

From the patients who underwent keratoplasty within the last three years we selected 40 out of a total of 121 with the following common features: diameter of the button 7.1 mm, indication for surgery for optical reasons, healing of the button with sufficient clarity, achieving visual acuity of 0.5 or better. In 20 patients we used a running 10/0 nylon suture; in the remaining 20 cases we combined single 8/0 silk sutures with a runing 10/0 prolene suture. No statistically significant difference between the two groups was found when corneal astigmatism was compared to six to eight months postoperatively (at least two months following suture removal). This also applied in respect of the resultant refraction difference. However, in cases of keratoconus the combined suture technique resulted in a lower degree of astigmatism than the running suture technique alone.

Astigmatism↗
PubMed1980

[Diabetic pre-retinopathy].

In 169 out of 409 diabetic patients without any ophthalmoscopically or biomicroscopically visible retinal changes, typical symptoms of diabetic pre-retinopathy were revealed by fluorescein angiography: capillary dilatation (89.3%), capillary occlusion (78.7%), leakage from small blood vessels (54.4%) and arteriovenous shunts (40.8%). No correlation was found between the duration of the diabetes mellitus and the onset of diabetic pre-retinopathy. Juvenile diabetics developed significantly more capillary occlusions, while in diabetics of advanced age capillary occlusions and leakage from small vessels were encountered with almost equal frequency.

Adolescent↗
PubMed1980

[Indications for cataract surgery in diabetics].

Twenty-five patients suffering from incipient cataract and diabetic retinopathy were submitted to cataract extraction. The intention was not only to improve visual acuity but also to permit better follow-up by fluorescein angiography and useful treatment by xenon light or laser coagulation. Postoperative complications were no more common than in nondiabetic patients, and a comparison with nine cases who refused surgery showed that the diabetic retinopathy was managed better in the aphakic eyes in respect of visual acuity and diabetic fundus changes.

Aged↗
PubMed1980

[Implants in retinal detachment surgery (author's transl)].

This paper concerns experience gained by the authors with implants utilized during the past six years at the 1st University Eye Clinic, Vienna, in surgical treatment of 704 cases of rhegmatogenous retinal detachment: in 493 procedures a scleral buckle (silastic sponge in 81%) was applied, in 211 cases an encircling element (a silicon rod 2 mm in diameter in 83%). The subretinal fluid was drained in 52% of the buckling procedures, and in 90% of the encircling procedures. The success rate was 93% in the cases treated by buckling, and 79% following an encircling procedure. Thirty-four cases exhibiting massive periretinal proliferation and three cases with giant ears extending over 180 degrees were treated by retinopexy and indentation of the scleral wall in combination with vitrectomy followed by insufflation of SF6 gas. In 13 of these cases (two of them with giant tears) an anatomical cure was achieved.

Drainage↗
PubMed1980

[Intravitreal injection of SF6 gas in vitreoretinal surgery (author's transl)].

Within the past 3 years intravitreal injection of SF6 gas was performed in 31 vitreoretinal surgical procedures. In 29 cases an additional vitrectomy was performed, and in 10 cases with massive periretinal proliferation (MPP) epiretinal membranes were stripped. The rate of success following intravitreal injection of SF6 gas as an adjunct to buckling procedures in severe cases of rhegmatogenous retinal detachment was 83%, as an additional measure in cases with giant tears extending over 180-225 degrees, 75%, in cases of tractional detachment due to preretinal and transvitreal strands, 60%, and in cases with MPP, 30%.

Fluorides↗