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Biomedical subjects

R Törnquist

Publications and source records attributed to R Törnquist.

At least 19 recordsLinked to original sources
PubMed1988

Retinal detachment. A study of a population-based patient material in Sweden 1971-1981. III. Surgical results.

Surgical results and complications were studied retrospectively in 590 cases of retinal detachment in a population-based material of 538 patients. Of the 590 cases 96.3% were operated upon, and 22.9% of these underwent one or more re-operations. The technique used was cryo- or photocoagulation (100%) + scleral buckling or an encircling band (96%) + drainage of subretinal fluid (80%). The surgical complications were intraocular bleeding (13%), choroidal detachment (7%), and proliferative vitreo-retinopathy (5%). All complications were significantly more frequent after re-operations. Complete re-attachment was achieved in 78.1%. The re-attachment rate was significantly lower in aphakic cases (66.7%) than in phakic non-traumatic cases (80.8%). The visual acuity in re-attached cases was better than 0.5 in 33.7% and better than 0.1 in 72.2%.

Adult↗
PubMed1988

Retinal detachment. A study of a population-based patient material in Sweden 1971-1981. IV. Prediction of surgical outcome.

The association between the outcome of 531 surgically treated retinal detachments (RD) and preoperative findings was studied by logistic univariate and multivariate analysis. The following factors were significantly, and negatively associated with the surgical results: 1) previous RD in the same eye, 2) pre-operative visual acuity less than 2/60, 3) cloudy ocular media and/or a poorly dilated pupil, 4) an RD area of more than three quadrants, and 5) no retinal breaks detected. In the multivariate analysis no significant association was found for 9 factors: open angle glaucoma, interval of more than 2 months between symptoms and surgery, aphakia, pre-operative hypotony, absence of demarcation lines, posterior retinal breaks, pre-operative proliferative vitreo-retinopathy, sex and age. The significant factors combined with aphakia were studied in all conceivable combinations. The estimated probability of failure varied between 4 and 93%, indicating that the most important factors were observed.

Female↗
PubMed1987

Retinal detachment. A study of a population-based patient material in Sweden 1971-1981. I. Epidemiology.

A population-based series of retinal detachments (RD) collected during a 10-year period (538 patients, 590 'cases', i.e. diseased eyes including new RD after 6 months in the same eye) is reported. The annual incidence was 10.6 per 100,000 population. Bilaterality was observed in 11.2%. In this material preponderance of the right eye was found. In non-traumatic RD there was a small sex difference, with a higher incidence among females. Older persons were at high risk of sustaining RD, as were myopes. In myopic males the risk increased with the degree of myopia and with increasing age. In myopic females the greatest risk was found in the age group 30-59 years. Myopic eyes are probably also more vulnerable to traumatic RD. Lattice degeneration was more common in middle-aged than in older patients and was also more common in myopic eyes than in eyes with other phakic RD. High myopia (greater than -5D) was more frequent in patients with lattice degeneration than in those without. Aphakia was found to be an important predisposing factor for RD. A classification taking into account the above-mentioned factors is proposed.

Adolescent↗
PubMed1987

Retinal detachment. A study of a population-based patient material in Sweden 1971-1981. II. Pre-operative findings.

In a population-based material of patients with retinal detachment (RD), the pre-operative findings in different subgroups were studied. In traumatic cases flap tears and round holes were found in at least as high a frequency as oral dialysis, or even higher. In aphakic cases subtotal or total RD was often observed on admission for surgery. A high proportion of aphakic eyes without lattice degeneration exhibited no breaks. RD in myopic eyes was usually large, and round holes were frequently found. Full-thickness fixed retinal folds were more seldom seen pre-operatively en myopic than in non-myopic eyes. Lattice degeneration was usually observed in myopic RD patients of ages less than 30 years, but mainly in hyperopic or emmetropic eyes in patients over 60. In RD with lattice, multiple breaks were frequently found. A comparatively large group of RD cases without lattice were non-traumatic, phakic and non-myopic (40%). Most of these patients were 60 years and older. Flap tears were often seen, and the detachment was seldom large in this group.

Adolescent↗
PubMed1981

Primary scleral atrophy and retinal detachment.

In a retrospective study 27 patients with retinal detachment had an advanced primary scleral atrophy, needing treatment with a scleral graft. Among these 27 patients none was younger than 47. There was s good correlation between the location of the atrophic sclera and the retinal tears. Many of these eyes had an oblique astigmatism. Lattice degeneration was found to be rare. A history of retinal detachment was common in the fellow eye. The scleral grafts were well accepted by the eyes.

Aged↗
PubMed1981

Inherited retinal detachment.

Patients with retinal detachment and their relatives with the same disease (Group F) are compared to a group of unselected cases of retinal detachment from the Swedish population (Group C). The prevalence of bilaterality is greater in Group F. The age-distribution shows younger patients. Myopic refraction is common. More cases with aphakia, lattice degeneration and large tears are found. All these differences are highly significant. Multiple retinal holes are also significantly more common in Group F. After operation, healing is achieved in 78.8% which is not significantly different in comparison with the cure rate in Group C. (83.4%).

Adolescent↗
PubMed1977

Retinal detachment in aphakia.

In a prospective study five hundred consecutive cases of cataract operations were followed during ten years. Nine cases of retinal detachment were observed. In a retrospective study 77 cases with aphakic retinal detachment were studied according to type of cataract operation, interval between this operation and the onset of retinal detachment, refraction, area of detachment and results of treatment. About fifty percent of the cases of retinal detachment are observed during the first year after the cataract operation. At the first examination the detached area is usually larger in aphakic eyes than in phakic eyes. The anatomical and functional cure after detachment operation is probably less in aphakic than phakic eyes.

Cataract Extraction↗