نتایج جستجو برای: microaneurysms

تعداد نتایج: 437  

1980
D Siva Sundhara Raja S Vasuki

This study presents a new method for screening Diabetic Retinopathy (DR), is the leading ophthalmic pathological cause of blindness among people of working age in developed countries. The first manifestations of DR are tiny capillary dilations known as Microaneurysms (MA) and Exudates. It may provide an early indication of the risk of the Type –I Diabetes. The various features of the images of ...

Journal: :BMJ case reports 2014
Mariana Rodrigues Diana Amaral João Luís Barreira Iva Brito

To cite: Rodrigues M, Amaral D, Barreira JL, et al. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/ bcr-2014-207866 DESCRIPTION A 6-year-old boy with frequent episodes of fever, myalgia and arthralgia, presented with arterial hypertension (HTN). When he was 2 years old he was extensively investigated due to a small thalamic stroke, but no diagnosis was made. While be...

Journal: :The British journal of ophthalmology 1966
P H Madsen

RETINAL micro-aneurysms were observed histologically by Mackenzie and Nettleship as early as 1879. However, these observations passed unnoticed until 1943 when Ballantyne and Loewenstein found numerous spherical micro-aneurysms on the capillaries in flat histological sections of retinae from diabetics. These microaneurysms were conceived to be the histological substrate for the small sanguinole...

Journal: :Clinical science 1979
A C Burden H Thurston

1. The plasma renin activity (PRA) was measured in 76 diabetic patients who were attending an outpatients clinic. Of these patients 16 had untreated hypertension and 28 had diabetic complications, which ranged from microaneurysms to renal failure and blindness. 2. Compared with age- and sex-matched normotensive control subjects, both normotensive and hypertensive diabetic patients had significa...

Journal: :Investigative ophthalmology & visual science 1985
L I Rand G J Prud'homme F Ederer P L Canner

Natural history data from the Diabetic Retinopathy Study were examined by multivariate methods to determine which baseline characteristics could predict the occurrence of severe visual loss (SVL) in eyes originally assigned to no treatment. The presence and extent of new blood vessels on the optic disc (NVD) had the strongest association with SVL. Several other ocular characteristics also were ...

2016
Mohammed Shafeeq Ahmed

Diabetic Retinopathy (DR) is one of the main causes of vision loss in the world among patients suffering from diabetes. DR is a chronic eye disease, which can be controlled by regular checkup & treatment. If left untreated, loss of vision occurs gradually and become blind. The detection and diagnosis of DR is important. DR is characterized by its features like, micro aneurysms (MAs), hemorrhage...

2007
A. M Aibinu M. I Iqbal M. Nilsson M.J.E Salami

Automatic diagnosis and display of diabetic retinopathy from images of retina using the techniques of digital signal and image processing is presented in this paper. The acquired images undergo pre-processing to equalize uneven illumination associated with the acquired fundus images. This stage also removes noise present in the image. Segmentation stage clusters the image into two distinct clas...

2018
Song Guo Yingqi Gao Kai Wang Tao Li

The condition of vessel of the human eye is a fundamental factor for the diagnosis of ophthalmological diseases. Vessel segmentation in fundus image is a challenging task due to low contrast, the presence of microaneurysms and hemorrhages. In this paper, we present a multiscale and multi-level deeply supervised convolutional neural network with short connections for vessel segmentation. We use ...

Journal: :Stroke 2008
Michelle L Baker Peter J Hand Jie Jin Wang Tien Y Wong

BACKGROUND AND PURPOSE The retinal and cerebral vasculature share similar anatomic, physiological, and embryological characteristics. We reviewed the literature, focusing particularly on recent population-based studies, to examine the relationship between retinal signs and stroke. Summary of Review- Hypertensive retinopathy signs (eg, focal retinal arteriolar narrowing, arterio-venous nicking) ...

2017
Wen-Shi Shieh Gaurav K Shah Kevin J Blinder

Purpose To describe the clinical response of refractory macular edema associated with Coats' disease following treatment with aflibercept and laser photocoagulation. Methods Case report. Results A 17-year-old female presented with decreased vision of the left eye. Ophthalmic exam demonstrated intraretinal hemorrhages and exudation with associated edema centrally. Angiographic evaluation rev...

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