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...

introduction: retinal vein occlusion  is a common vascular disorder disrupting vision. two basic types of rvo are branch retinal vein occlusion and central retinal vein occlusion (crvo).  retinal vein occlusion is a multifactor process including systemic illness and local retinal factors.rvo may be associated with atherosclerotic risk factors. we analyzed the role of 2 dimensional transthoracic...

BACKGROUND Acute retinal necrosis (ARN) is a viral syndrome consisting of uveitis/vitritis, occlusive vasculitis and peripheral necrosis. Few incidents are reported in children. The etiology is reactivated herpes simplex virus (HSV) or varicella-zoster virus (VZV). Treatment with acyclovir is often used. The administration of oral glucocorticosteroids is of unproven benefit. Prognosis is variab...

Although cerebral small vessel disease has been implicated in the development of Alzheimer's disease (AD), the cerebral microcirculation is difficult to visualize directly in vivo. As the retina and the brain share similar embryological origin, anatomical features and physiological properties with the cerebral small vessels, the retinal vessels thus offer a unique and easily accessible "window"...

PURPOSE To report two cases of retinitis pigmentosa (RP) associated with vasoproliferative tumors (VPTs) and Coats-like fundus. CASE REPORTS Two patients with RP presented with recent loss of vision due to combined VPTs and Coats-like retinal vascular alterations. One patient had two VPTs with adjacent capillary nonperfusion, telangiectasia and aneurysmal vascular changes in one eye. The othe...

herpes zoster ophthalmicus (hzo) is a clinical manifestation of the reactivation of latent varicella zoster virus (vzv) infection and is more common in people with diminished cell-mediated immunity. lesions and pain correspond to the affected dermatomes, mostly in first or second trigeminal branch and progress from maculae, papules to vesicles and form pustules, and crusts. complications are cu...