Sökresultat

Filtyp

Din sökning på "*" gav 530803 sökträffar

Loving the alien

Miriam Aida, vocals Mats Andersson, guitar Ola Bothzen, percussion Finn Björnulfsson, percussion plays the music of David Bowie.

Refractive error and glaucoma

Purpose: To study the association between refractive error, glaucoma damage and IOP in a large population. Methods: We examined 32,918 citizens of the city of Malmö, Sweden, 57-79 years of age, searching for individuals with undetected glaucoma. Refraction was measured with autorefractors. Glaucoma damage was defined as reproducible visual field defects with the Humphrey Full Threshold 24-2 progra

Comparability of three-dimensional optic disc imaging with different techniques. A study with confocal scanning laser tomography and raster tomography

Purpose: We wanted to compare optic nerve head topography measurements and discrimination between normal and glaucomatous eyes with two entirely different three-dimensional optic disc imaging techniques, confocal scanning laser tomography (Heidelberg Retina Tomograph, Heidelberg Engineering) and raster tomography (Glaucoma-Scope, Ophthalmic Imaging Systems). Methods: Both eyes of 225 normal subjec

Förändrad syn på glaukom : I första hand en optikusneuropati, inte en sjukdom i ögats kammarvinkel

Glaucoma is now considered to be primarily an optic neuropathy, not a disease of the anterior chamber angle. Although intraocular pressure remains a crucial variable, the relationship between increased intraocular pressure and glaucoma is now recognised as being less simple than formerly believed. The new approach to the disease is reflected in a review by the National Board of Health and Welfare

Early Manifest Glaucoma Trial : Design and baseline data

Objectives: The Early Manifest Glaucoma Trial (EMGT) will evaluate the effectiveness of reducing intraocular pressure (lOP) in early, previously untreated open-angle glaucoma. Its secondary aims are to explore factors related to glaucoma progression and to study the natural history of the disease. This article describes the EMGT design and presents baseline data. Design: Randomized, clinical trial

Optic nerve head sector analysis recognizes glaucoma most effectively around disc poles

Purpose: To analyze the topography of normal and glaucomatous discs with the goal of developing improved strategies to discriminate between normal and glaucomatous eyes. Subjects and methods: Raster tomography was performed in both eyes of 225 healthy subjects and in 296 eyes of 214 glaucoma patients. Cup area, average cup radius, rim area and minimal rim width were measured in 24 sectors around t

Age, gender, IOP, refraction and optic disc topography in normal eyes. A cross-sectional study using raster and scanning laser tomography

Purpose: To study the influeuce of age, gender, intraocular pressure and refraction on optic disc topography in normal subjects. Methods: We studied both eyes of 225 healthy subjects between 20 and 80 years of age using raster tomography (Glaucoma-Scope®, Ophthalmic Imaging Systems, Sacramento CA, USA) and scanning laser tomography (Heidelberg Engineering, Heidelberg, Germany). We chose to study c

A comparison of dorzolamide and timolol in patients with pseudoexfoliation and glaucoma or ocular hypertension

Purpose: The purpose of the study is to compare the efficacy and safety profile of 2.0% dorzolamide (three times daily) and 0.5% timolol (twice daily) for up to 6 months in patients with glaucoma or ocular hypertension associated with pseudoexfoliation. The additive effects of dorzolamide and timolol in patients requiring add-on therapy also was evaluated. Methods: This was a double-masked, random

Prevalence of diabetic retinopathy in relation to age at onset of the diabetes, treatment, duration and glycemic control

To study the frequency of diabetic retinopathy in relation to age at diagnosis, treatment, duration of diabetes and glycemic control as measured by means of HbA(1c) levels, we performed a cross-sectional, register-based study in the Helsingborg area of southern Sweden, comprising 2232 diabetic patients. Of the known diabetic population < 75 years old, approximately 70% were estimated to be include

Progression of retinopathy is related to glycaemic control even in patients with mild diabetes mellitus

To study the progression of retinopathy in patients with mild diabetes mellitus, we examined, in a cohort study, 347 patients treated with diet alone at baseline. The patients participated in an ophthalmological screening and control programme, and diet-treated patients who were examined between January 1990 and July 1992 were included in the study and followed until October 1995. Mean follow-up t

Incidence of blindness and visual impairment in diabetic patients participating in an ophthalmological control and screening programme

We studied the incidence of blindness and visual impairment in patients who were enrolled in a photographic control- and screening program for diabetic retinopathy. The study cohort consisted of 2133 patients examined between January 1990 and December 1992 and followed until October 1st 1995. The occurrence of blindness (visual acuity ≤ 0.1) and moderate visual impairment (visual acuity 0.2-0.4) w

Sensitivity and specificity of structural optic disc parameters in chronic glaucoma

We studied different structural optic disc parameters and their ability to discriminate between normal and glaucoma eyes using computerized raster tomography. Two hundred and seventy-six eyes of 138 normal subjects and 146 eyes of 102 glaucoma patients were examined with a raster tomographic imaging system (The Glaucoma-Scope®, Ophthalmic Imaging Systems, Sacramento, CA). Glaucoma eyes were classi

Pitfalls of automated perimetry in glaucoma diagnosis

Perimetry is a cornerstone in glaucoma management. The detection of glaucomatous visual field loss is of crucial importance for diagnosing the disease. Automated threshold perimetry makes thorough testing of the central visual field very possible and high-quality data are often achieved. Certain factors, however, may hamper the visual field examination or visual field interpretation. Many diseases

Diffuse visual field loss and glaucoma

Abstract. It is often claimed that general reduction, or diffuse loss, of perimetric sensitivity is an early sign of glaucoma. Our clinical experience and the results of a few other studies led us to believe otherwise. To investigate factors associated with diffuse field loss we reviewed 4222 Humphrey 30–2 threshold tests from 1582 eyes of 862 patients followed at our department. Most of these pat

Latanoprost administered once daily caused a maintained reduction of intraocular pressure in glaucoma patients treated concomitantly with timolol

The long term effects of two dose regimens of latanoprost (PhXA41) administered to eyes concomitantly treated with timolol which had not adequately been controlled by timolol alone were compared. A total of 50 patients, 17 with primary open angle glaucoma and 33 with capsular glaucoma, were recruited from five clinics. All had glaucomatous visual field defects and an intraocular pressure (IOP) of

Shape Synthesis Based on Topology Sensitivity

A method evaluating the sensitivity of a given parameter to topological changes is proposed within the method of moments paradigm. The basis functions are used as degrees of freedom which, when compared to the classical pixeling technique, provide important advantages, one of them being impedance matrix inversion free evaluation of the sensitivity. The devised procedure utilizes port modes and the