نتایج جستجو برای: retinal vessel occlusion
تعداد نتایج: 204184 فیلتر نتایج به سال:
Purpose: To report a rare case of slow progression carotid cavernous fistula (CCF) with central retinal vein occlusion (CRVO).Case summary: A 66-year-old man presented conjunctival injection and proptosis in the right eye. Best-corrected visual acuity was 0.8 0.5 left eye, respectively, vessel enlargement subconjunctival hemorrhage were observed eye on slit lamp examination. Due to suspicion CC...
BACKGROUND AND PURPOSE The goal of this study was to examine the hypotheses that retinal ischemia is caused more often by carotid atherosclerosis than by atrial fibrillation and that the odds of retinal events compared with hemispheric events increase with worsening carotid stenosis. METHODS We used data from the Stroke Prevention in Atrial Fibrillation (SPAF) I through III trials and North A...
Seasonal variation in the development of retinal vein occlusion in 1003 consecutive patients with various types of retinal vein occlusion was studied prospectively from 1973 to 1990. No seasonal variation in the onset of any type or combination of types of retinal vein occlusion was found. This refutes previous reports of such seasonal variation, which were based on small retrospective series.
purpose: to evaluate the efficacy of radial optic neurotomy (ron) combined with or without intravitreal triamcinolone acetonid (ivta) injection in the management of central retinal vein occlusion (crvo). methods: this non-randomized clinical trial was conducted on 23 patients with crvo, who underwent ron with or without ivta injection. preoperative and postoperative best corrected visual acuity...
BACKGROUND The rare occurrence of iris neovascularisation and choroidal (subretinal) neovascularisation in patients with choroidal melanoma has been reported. However, the occurrence of preretinal neovascularisation (NVE) fed from the retinal circulation in eyes with choroidal melanoma is far less frequently reported. METHODS Three case reports of choroidal melanoma with the very rare finding...
Retinal vein occlusion is one of the most common causes of retinal vascular abnormality and a frequent cause of vision loss. It is an obstruction of the retinal venous system by thrombus formation and may involve the central, hemicentral or branch retinal vein. It typically occurs in middle-aged and elderly patients, and its increased occurrence is therefore associated with the increased aging ...
OCCLUSION of a branch retinal arteriole in the human eye may follow either embolism or thrombosis. Emboli usually originate from the left heart or carotid arteries and thrombosis most often occurs as a complication of hypertension or diabetes. If the vascular occlusion persists, collateral blood flow may be established by tortuous channels linking the blocked vessel with patent vessels nearby. ...
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