Search Results
Results 251 - 300 of 1082
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Lai Cheong J E - - 2005
A 55 year old woman, known to have systemic lupus erythematosus and protein S deficiency, presented with sudden onset of visual loss in the left eye. Three days previously, she took a herbal phytoestrogen preparation for relief of her menopausal symptoms. Ophthalmological assessment showed a left inferior hemiretinal vein thrombosis. ...
Zaninetti Marc - - 2005
BACKGROUND: Central retinal vein occlusion is a relatively common retinal disorder in the elderly, and those with cardiovascular or thrombophilic risk factors are at increased risk. Although still unsatisfying, some treatments for the acute and chronic phases have been established based on randomized studies. However, for rare conditions mimicking central ...
Shah S P - - 2005
PURPOSE: To report a case of acute retinal necrosis presenting as central retinal artery occlusion with cilioretinal sparing. METHODS: Single interventional case report. The findings of the ophthalmic examination, MRI, blood parameters, biopsy results and clinical course are reported. RESULTS: A forty two year old gentleman reporting sudden loss of ...
Hayashi Kengo - - 2005
BACKGROUND: Indocyanine green angiography revealed a markedly bent and tortuous choroidal artery in the macula of the left fundus in a highly myopic patient. CASE: The patient's corrected visual acuity was 1.0 in both eyes, and he had no visual symptoms. OBSERVATIONS: Ten years after the initial examination, atrophy of ...
Moshfeghi Andrew A - - 2005
A 78-year-old woman with a recurrent retinal detachment in the right eye presented 2 years after her last surgery with clinical and fluorescein angiographic evidence of sympathetic ophthalmia in the left eye. Fluorescein angiography showed discrete multifocal areas of central hypofluorescence with a hyperfluorescent ring. After immunosuppressive therapy, fluorescein angiography ...
le Noble F - - 2005
Formation of a properly branched vascular system during embryogenesis is crucial for embryo survival. Here we review the regulation of the morphogenesis of the arterial and venous system during embryogenesis. We show that in addition to deterministic patterning mechanisms and plasticity of endothelial cells, arterial-venous differentiation and branching morphogenesis involves ...
Wu Jie - - 2005
BACKGROUND: Although the clinical importance of immunoglobulin-A nephropathy (IgAN) is widely recognized, the characteristics of intrarenal arterial lesions in this disease and the main factors associated with them have not been studied extensively, and a large-scale analysis of intrarenal arterial lesions in IgAN has not been performed. METHODS: To clarify ...
Nagaoka Taiji - - 2005
PURPOSE: To examine the relation between intima-media thickness (IMT) in the common carotid artery, which is generally recognized as a marker of early atherosclerosis, and retinal circulatory parameters. METHODS: The vessel diameter and blood velocity of retinal arterioles were measured with laser Doppler velocimetry (LDV) in 33 patients with coronary ...
Rambold H - - 2005
Auditory and vestibular function was examined in 29 patients with unilateral sensorineural hearing loss to identify characteristic vestibulocochlear lesion patterns. In 45%, a vestibular lesion was found, of which 53% had a combined impairment of the cochlea and the ipsilateral posterior semicircular canal, possibly reflecting vascular disease in the common ...
Yamamoto Shuichi - - 2005
PURPOSE: To describe a patient with a central retinal vein occlusion (CRVO) who developed central retinal artery occlusion after radial optic neurotomy. DESIGN: Interventional case report. METHODS: A 70-year-old woman with CRVO underwent a radial optic neurotomy on her right eye. Her preoperative visual acuity in the affected eye was ...
Fujioka Sayuri - - 2005
BACKGROUND: There are no specific ocular findings for infectious endocarditis. We report a case of infectious endocarditis detected by combining orbital color Doppler imaging (CDI) and ophthalmological findings. CASE: A 47-year-old man suffered from lumbar pain and low-grade fever. He had undergone heart surgery for a ventricular septal defect and ...
Erturk M - - 2005
The cranio-orbital foramen, a foramen in the lateral wall of the orbit, contains an anastomosis between the anterior branch of the middle meningeal artery and the lacrimal artery. Previous workers have speculated that the groove starting either from the cranio-orbital foramen or the lateral extremity of the superior orbital fissure ...
Ninomiya Hiroyoshi - - 2005
The architecture of the retina, choroid and anterior eye segment was investigated in 12 Syrian hamsters using scanning electron micrographs of methylmethacrylate corrosion casts. The hamster eye receives its primary blood supply from the long posterior ciliary artery, which directly enters the optic nerve head, and divides into three branches: ...
Marin-Sanabria Elio Arnaldo - - 2005
BACKGROUND AND PURPOSE: Retinal vasculopathy is commonly found with complaint of burred vision by ophthalmologist and closely related to asymptomatic cerebrovascular disease. The purpose of this study was to evaluate patients with microvascular retinopathy by ultrasound sonography of neck carotid artery and to find high risk group for stroke at ...
Ghazi Nicola G - - 2005
PURPOSE: To report an unusual phenotype of retinal angiomatous proliferation (RAP) in age-related macular degeneration (AMD) and its short-term response to laser photocoagulation. METHODS: Case report. RESULTS: An 85-year-old woman was found to have an unusual RAP with a major feeder vessel originating from a cilioretinal artery and associated with ...
Paques Michel - - 2004
PURPOSE: To report in four patients with retinal vein occlusion the presence of biomicroscopically visible circulation in the minor arterial circle of the iris, preceding rubeosis iridis in two cases. DESIGN: Retrospective observational case series. METHODS: Four patients with ischemic type of central or hemi-central retinal vein occlusion seen at ...
Ichikawa Masaki - - 2004
PURPOSE: To examine the inhibitory effects of topically instilled bunazosin hydrochloride (bunazosin), a selective alpha1-adrenoceptor antagonist, on the retinal artery constrictions induced by intravitreous phenylephrine hydrochloride (phenylephrine) and endothelin (ET)-1 in rabbits. METHODS: Phenylephrine or ET-1 (20 microL) was injected into the central part of the vitreous in both eyes ...
Burri Peter H - - 2004
This review shall familiarize the reader with the various aspects of intussusceptive angiogenesis (IA). The basic event in IA is the formation of transvascular tissue pillars. Depending on location, timing, and frequency of pillar emergence, the IA process has different outcomes. In capillaries, a primary IA function is to expand ...
Yucel Selcuk - - 2004
PURPOSE: Data about the differences between the vascularization of normal and hypospadiac prepuce are lacking. We investigated the course of the preputial arterial blood vessels in normal controls and children with hypospadias by using transillumination, arterial methylene blue injection and 3-dimensional (3-D) reconstruction of serial histological sections focusing on arterial ...
Akdemir Gökhan - - 2004
BACKGROUND: The purpose of the study is to describe anatomic topographic landmarks for transethmoidal approach to optic canal for optic nerve decompression. The study focuses on microsurgical/radiologic anatomies and their relationships in the region of the optic canal and orbit. METHODS: Human optic canal and related anatomic structures were studied ...
Küçükerdönmez Cem - - 2004
BACKGROUND: Ocular toxoplasmosis can cause a variety of retinal vascular changes including branch retinal arterial occlusion, which is a rare complication of the disease. PATIENT AND METHODS: We report a case of toxoplasmic chorioretinitis in a pregnant woman, who developed branch retinal arterial obstruction adjacent to the active chorioretinitis lesion. ...
Vicente Cristina P - - 2004
Heparin cofactor II (HCII) is a plasma protein that inhibits thrombin rapidly in the presence of dermatan sulfate or heparin. We previously reported that the time to thrombotic occlusion of the carotid artery after photochemical injury was shorter in HCII-deficient mice than in wild-type control animals. In this paper, we ...
Haritoglou Christos - - 2004
PURPOSE: To assess histopathological findings in patients with cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL). DESIGN: Case reports and histopathological evaluation of enucleated eyes. METHODS: Four eyes from two CADASIL patients were enucleated at autopsy and prepared for histopathological analysis using light and electron microscopy. RESULTS: Thickening ...
Huber K - - 2004
PURPOSE: To correlate retinal circulatory measurements using scanning laser fluorescein angiography and flow velocities of retrobulbar vessels measured by means of colour Doppler imaging. METHODS: Fifteen patients with normal pressure glaucoma (NPG) and 15 healthy volunteers underwent colour Doppler imaging and fluorescein angiographic studies. Peak systolic velocities (PSVs), end-diastolic velocities ...
Foroozan Rod - - 2004
Progressive, painful blurred vision and proptosis developed in the left eye of a 32-year-old man over an 8-day period. On initial neuro-ophthalmic evaluation the visual acuity in the left eye was no light perception. Erythema of the periorbital skin, 5 mm of proptosis, and ophthalmoplegia were noted on the left ...
Garhöfer G - - 2004
INTRODUCTION: Diffuse luminance flicker increases retinal vessel diameters in animals and humans, indicating the ability of the retina to adapt to different metabolic demands. The current study seeks to clarify whether flicker-induced vasodilatation of retinal vessels is diminished in glaucoma patients. METHODS: Thirty-one patients with early stage glaucoma (washout for ...
Unal Birsen - - 2004
OBJECTIVE: We aimed to search for differences between observers and automatic and manual measurements in calculations of Doppler parameters. METHODS: The middle cerebral artery (MCA), central retinal artery, ophthalmic artery (OA), common carotid artery (CCA), vertebral artery (VA), popliteal artery (PA), interlobar renal artery (IRA), and arcuate renal artery (ARA) ...
Maár Noémi - - 2004
OBJECTIVE: To investigate the response of retinal vessel diameters to photocoagulation treatment and their role for the success of laser treatment in patients with retinal vein occlusion. METHODS: The study included 14 patients with branch vein occlusion or macular vein occlusion. The ophthalmologic examination included best-corrected visual acuity, biomicroscopy, fundus ...
Ben Simon Guy J - - 2004
A 32-year-old man presented with coexisting orbital hemangioma and juxtapapillary exophytic capillary hemangioma. Fluorescein and indocyanine green angiography revealed exophytic juxtapapillary retinal capillary hemangioma. The orbital cavernous hemangioma was surgically removed, and the retinal capillary hemangioma was observed without treatment. Subretinal hemorrhage gradually absorbed and clinical symptoms improved. Juxtapapillary exophytic ...
Maaroufi R M - - 2004
Antiphospholipid antibodies may play and important role in the pathogenesis of retinal vascular occlusions; investigated the prevalence among 33 patients with retinal vein and artery occlusions and 80 controls. Prevalence was 33% and 5% respectively. Ophthalmic examination and fluorescein angiography showed that occlusions were due to ischaemic events. The 11 ...
Imai Eiko - - 2004
We report a case of branch retinal artery occlusion (BRAO) in a patient with iron-deficiency anemia. Various ophthalmological and laboratory studies were performed. A 32-year-old man had a sudden decrease of vision in his left eye to counting fingers at 30 cm two days ago. The left fundus showed a ...
Tsilimbaris Miltiadis K - - 2004
PURPOSE: To evaluate the feasibility of microvascular surgery at the level of the retinal vasculature. METHOD: Porcine eyes were used, and eyecups were prepared under an operating microscope. Several classic microvascular maneuvers were explored, such as vascular puncturing, catheterization, mobilization, intravascular injections, and various combinations of the same. Instruments used ...
Sorrentino Paolo - - 2004
Retrobulbar-ocular circulation provides an opportunity to assess the terminal circulation of the arterial cerebral tree. To evaluate whether retrobulbar circulation in patients with chronic liver disease is affected by adaptive mechanisms, we assessed by echo color Doppler, 1. The resistive-index of the central retinal artery, a terminal branch of the ...
Haritoglou C - - 2004
To assess retinal vascular alterations in cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy, the authors examined 10 affected individuals with ophthalmologic evaluation including fluorescence angiography. Findings included bilateral peripapillary arteriolar sheathing (30%), arteriolar narrowing (80%), and arteriovenous nicking (90%). No retinal infarcts, vascular occlusions, exudation, or hypoperfusion of ...
Sbeity Zaher H - - 2004
PURPOSE: To present a complication of repeated Valsalva maneuver. METHODS: Case report with serial intravenous fluorescein angiography and comprehensive workup for coagulopathies. RESULTS: After playing strenuous musical pieces, a solo trombonist suffered within 1 year three attacks of visual loss in the right eye; he had two attacks of inferior ...
Yokoi Masahiko - - 2004
BACKGROUND: Retinal vasculitis is one of the manifestations of ocular syphilis. CASE: A 29-year-old man was referred to our hospital with the complaint of sudden visual loss in the left eye lasting more than three weeks. OBSERVATIONS: Ophthalmoscopic examination showed retinal hemorrhages, edema, and sheathing of large retinal arteries and ...
Gray Andrea V - - 2004
PURPOSE: To report a case of Bartonella henselae infection. DESIGN: Observational case report. METHODS: Review of the clinical, laboratory, photographic, and angiographic records of a patient with cat scratch disease associated with central retinal artery and vein occlusion, neovascular glaucoma, and severe vision loss. RESULTS: A 21-year-old man had no ...
Yildiz D - - 2004
Arterial vascularisation of the ovine pineal gland was investigated by latex injection preparations of the common carotid artery in 20 adult Akkaraman sheep brains under stereo light microscope. It was observed that the arterial supply comes exclusively from branches of the caudal cerebral artery. The pineal gland was found to ...
Reynard Michael - - 2004
PURPOSE: To describe a patient with central retinal artery occlusion successfully treated with neodymium:yttrium-aluminum-garnet laser arteriotomy and embolectomy. DESIGN: Interventional case report. METHODS: A 77-year-old woman noted sudden loss of vision after vigorous coughing. A central retinal artery occlusion was diagnosed. Four hours after symptoms appeared, arteriotomy and embolectomy with ...
Susac J O - - 2004
A 39-year-old woman presented with multiple branch retinal artery occlusions almost three years before developing a mass lesion containing calcium in the left frontal lobe. Brain biopsy revealed a small vessel vasculitis and ischemic necrosis of brain with dystrophic calcification. We believe this to be the first case of primary ...
Koak Nilufer - - 2003
As small astrocytic hamartomas can sometimes be missed during routine ophthalmoscopy in patients with tuberous sclerosis, fluorescein and/-or indocyanine green angiography maybe more helpful in identifying such small astrocytomas. In fluorescein angiography, astrocytomas show gradually increasing hyperfluorescence due to the vascular permeability of astrocytomas. In indocyanine green angiography, astrocytomas appear ...
Udono Tetsuo - - 2003
PURPOSE: To describe a rare bilateral central retinal artery occlusion in a patient with Churg-Strauss syndrome. DESIGN: Observational case report. METHODS: A 68-year-old Japanese man with Churg-Strauss syndrome developed sudden vision loss in both eyes. Medical history included bronchial asthma, elevated eosinophils, and aortic regurgitation. RESULT: Central retinal artery occlusion ...
Venkatesh P - - 2003
PURPOSE: To report a case of hemiretinal vein occlusion in a patient with Wegener's granulomatosis. RESULTS: Retinal vein occlusion may occur in patients with Wegener's granulomatosis even in the absence of active inflammation affecting the retinal venules. CONCLUSIONS: Wegener's granulomatosis should be considered in the diagnostic workup of young patients ...
Zein Wadih M - - 2003
Retinal vascular complications following embolization of carotid artery branches have been occasionally reported. Since the result can be catastrophic and is often irreversible, all efforts to prevent this complication should be considered prior to the intervention. We report the occurrence of a branch retinal artery occlusion following embolization of a ...
Cosson A - - 2003
The problem of the arterial vascularization of the human thalamus has been debated at length. Anatomical references concerning the thalamic arterial groups are contradictory and complex, preventing any solid application in practice. It is, therefore, difficult to produce reliable anatomical radio-clinical correlation. In this work, 12 adult human cerebellums (24 ...
Claxton Suzanne - - 2003
In mice the retinal vasculature develops in the first postnatal week by spreading from the optic nerve head towards the retinal periphery. During this growth period, exposure to hyperoxia causes vaso-obliteration of capillaries in the retinal center but not in peripheral regions. High oxygen levels lead to downregulation of vascular ...
Kawashima Tomokazu - - 2003
The sinuatrial nodal branch/artery (SANB), the sinuatrial nodal branch of the coronary artery, is anatomically regarded as a significant artery since it is used as a landmark to identify the sinuatrial node, in addition to its clinical significance. In previous reports, the SANB has been shown to have 2-5 routes ...
Kwok Alvin K H - - 2003
Spontaneous resolution of retinal arterial aneurysms may occur, but recurrences are uncommon. A case of idiopathic, bilateral, recurrent, diffuse retinal arterial aneurysms treated with direct laser photocoagulation is described. A 30-year-old woman with a history of physiologic menopause was found to have bilateral, diffuse, multiple retinal arterial aneurysms with massive ...
Weger M - - 2003
PURPOSE: Retinal artery occlusion is a common vision-threatening disease. Among other risk factors, coagulopathies leading to a hypercoagulable state have been associated with retinal artery occlusion. Numerous studies have shown that two genetic variants, factor V Leiden and prothrombin 20210A, cause a procoagulant state. However, their role in the pathogenesis ...
Steigerwalt Robert D RD - - 2003
The purpose of this paper is to report the use of intravenous prostaglandin E1, a potent vasodilator, to rapidly restore blood flow and vision in a patient with an acute branch retinal arterial occlusion. An 82-year-old woman with an acute decrease in the visual acuity of her left eye due ...
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