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Biomedical subjects

G Kolling

Publications and source records attributed to G Kolling.

11 recordsLinked to original sources
PubMed1989

[Measuring cyclodeviations].

This paper presents the results of a physiological study in which four methods used to measure cyclophoria were compared. A total of 50 persons without strabismus participated in a series of experiments. Monocular and binocular measurements were made in primary position. It was found that different methods have different means and ranges. Thus, when conducting clinical follow-up examinations, the same method should be used as before. The double-scale Maddox cylinder was found to be a simple and reliable screening method. The mean is close to 0 degrees and the physiologic range varies from 2 degrees incyclophoria to 2 degrees excyclophoria.

Convergence, Ocular↗
PubMed1982

[Results of Cüppers' Fadenoperation (author's transl)].

Of 157 patients with non-accommodative convergence excess who were examined, 29% presented with a varying squint angle of more than 5 degrees. The deviation was measured by alternate cover testing at distance fixation (5 m) and near fixation (0.33 m) with an object requiring full accommodation. In all patients a bilateral Cüppers' Fadenoperation (posterior fixation suture) of 12, 13, 14, 15 mm (distance between insertion and posterior fixation suture) on the medial rectus was carried out, without any other surgery such as recession of the medial rectus or resection of the lateral rectus. The results showed that it is possible to reduce the non-accommodative convergence excess and the variation of angle by this method.

Esotropia↗
PubMed1981

[Four methods of cyclodeviation measurement, especially the Cüppers deviometer (author's transl)].

A comparison of four methods of cyclodeviation measurement was made (Cüppers Deviometer, Scale Maddox cylinder glass, Aulhorn Phase difference haploscope, Cüppers Synoptometer) with 25 complaint-free controls without cyclovertical deviations; the advantages and disadvantages of the instruments are described. Physiological peculiarities in the measurement of the subjective horizontals are demonstrated by the clinical example of a patient with decompensated paresis of the m. obliquus superior. The extent of cycloduction depends on the direction of rotation, from which the measurement is made, on the test object, and on the influence of normal environmental experiences ("Erfahrungsmotive" according to Bielschowsky). It is shown that a unilateral paresis of the m. obliquus superior can be compensated motorically by cycloversion. With "Erfahrungsmotiven" excycloduction can be found neither subjectively (subjective horizontal) nor motorically (regular position of the blind spot).

Adult↗
PubMed1981

[Retraction syndrome (author's transl)].

A report on 70 cases of retraction syndrome (Stilling-Türk-Duane). The patients presented with typical symptoms: severe limitation of abduction, slight limitation of adduction and convergence, which is always accompanied by retraction of the globe, narrowing of the palpebral fissure, vertical deviation and elevated intraocular pressure, and a remarkable motility of the globe in the orbital axis. All symptoms are explicable by fibrosis or coinnervation of the lateral rectus muscle. Usually, single binocular vision is present with or without a forced attitude of the head. This forced attitude is such that the affected eye utilizes the reduced abduction fully and does not avoid the abduction (as in typical abducens-paresis), but retraction. In cases of single binocular vision, surgery is indicated only when the forced attitude of the head is intolerable. We restrict surgery to recession of horizontal rectus muscles according to the forced attitude.

Adult↗
PubMed1981

Color vision and other parameters of macular function after retinal reattachment.

Patients with a preoperatively detached macula and operated upon between October 1976 and July 1978 were analyzed for three parameters of macular function after surgical repair. Reattachment was achieved by cryopexy, an external sponge plombage and nondrainage. The observation period was a minimum of 1 year. Visual acuity increased in all patients with a maximum improvement in the first 3 months after macular reattachment. Color vision was postoperatively defective in every second patient. In the majority of cases it was a trito disturbance. The disturbance in color vision was most prominent in patients over 60 years old. During the period of 1 year, normalization of color vision occurred for the most part only in patients under 60 years of age. Metamorphopsia proved to be the most sensitive indicator of an episode of previous macular detachment. It occurred in every patient independently of age and was still present at the end of 1 year. It could be considered as a 'scar in the Amsler grid.' The occurrence of metamorphopsia was independent of whether subretinal fluid was drained or allowed to absorb spontaneously.

Adult↗
PubMed1978

[Cherry red spot without secure evidence of sphingolipidosis (author's transl)].

The occurence of bilateral cherry red spot without neurological disorders is a rare event. The reported case is a girl aged 14 years, whose only complaint was slight deterioration of vision. No secure enzymatic defects was found on examination of leucocytes. Though the cherry red spot is hardly to be explained in another way than by storage in optic ganglion cells. Static perimetry revealed a paracentral depression of contrast sensitivity.

Adolescent↗
PubMed1978

[The importance of the interference fringe visual acuity in the indication of a cataract-extraction (author's transl)].

100 patients have been examined before and after cataract-extraction using the Retinal Visual Acuity Tester, Takata, Japan. Laser produced interference fringes are formed on the retina, as a result the visual acuity can be determined easily before the operation. -- With immature cataracts we obtained a good correlation between the preoperative interference fringe visual acuity and the postoperative visual acuity tested by Landoltrings. Therefore, it can be differentiated whether worse visual acuity is caused by the cataract or by a retinal disease.

Adult↗