Background and Objectives: Retinal blood vessels classification into arterioles venules is a major task for biomarker identification. Especially, clustering of retinal challenging due to factors affecting the images such as contrast variability, non-uniform illumination etc. Hence, high performance automatic vessel system highly prized. In this paper, we propose novel unsupervised methodology c...

PURPOSE To correlate retinal vascular features with severity and systemic indicators of diabetic retinopathy (DR) using optical coherence tomography angiography (OCTA). METHODS A total of 209 eyes of 122 type 2 diabetes mellitus patients with DR and 60 eyes of 31 normal Indian subjects underwent OCTA imaging. The diabetic retinopathy patients were graded as having either nonproliferative diab...

C entral retinal vein occlusion (CRVO) is second only to diabetic retinopathy as a vascular cause of vision loss.1 Visual morbidity and blindness are most commonly due to macular capillary nonperfusion and persistent macular edema, as well as macular hemorrhage, vitreous hemorrhage, retinal detachment, and neovascular glaucoma.1,2 As the precipitating event in CRVO is thought to be intravascula...

In the frame of the ARIC study it could be shown that the retinal vessel system gives important information about retinal, ophthalmic, and cerebrovascular diseases by manually labeling the vessels. In this paper an approach is presented which automatically assesses the retinal vessel systems in fundus images. For this, first the optic disk is located. Afterwards the vessels are segmented and th...

Identification of Retinal Blood Vessel is much required for detecting vision capacity, Diabetic retinopathy, and also cardiovascular diseases like ophthalmic pathologies, hypertension. This work examines the blood vessel segmentation methodology in two dimensional retinal images acquired from a fundus camera. Many deduction methods are available but the results are not satisfactory. The measure...

This paper presents an automated method for detecting microaneurysms in the retinal angiographic images by using image processing techniques. In the presented method, in order to fade or remove the pseudo images, first retinal images are pre-processed. Then microaneurysms are identified by circular Hough transform. In the existing methods of dete...

In recent days glaucoma related problems are tremendously increased in a stratergical manner. Hence it is to be considered as a serious threat in biomedical problem among human beings. proper arrangement of retinal vessel provides information about the retinal abnormalities. This process help to find cause several retinal diseases. The assessment of blood vessel is used to find eye diseases suc...