نتایج جستجو برای: optic nerve injuries

تعداد نتایج: 303028  

Journal: :Biomedical reports 2016
Fei Xue Kunming Wu Tianyou Wang You Cheng Manjie Jiang Junfeng Ji

The aim of the present study was to investigate the morphological changes of the optic nerve following traumatic injuries and decompression at different times after injury, and to observe the changes of the visually evoked potentials, to identify the relevant associations between surgical opportunity and the clinical effect of traumatic optic nerve injuries. Rabbits were chosen as the animal mo...

2017
Kishan Kapupara Yao-Tseng Wen Rong-Kung Tsai Shun-Ping Huang

Retinal ischemic injuries play an important role in the pathogenesis of several eye disorders. Inflammation and oxidative stress are key players in ischemic injuries. Following retinal ischemia, vascular endothelial cells and leukocytes express several inflammatory adhesion receptors, such as selectins and cell adhesion molecules. P-selectin stimulates leukocyte recruitment to platelet aggregat...

Journal: :Ophthalmologica. Journal international d'ophtalmologie. International journal of ophthalmology. Zeitschrift fur Augenheilkunde 2009
A Sahap Kükner Turgut Yilmaz Serdal Celebi Safak Karslioğlu Gürsoy Alagöz Didem Serin M Akif Acar M Faik Ozveren

PURPOSE To investigate the features of orbital injuries by pellets fired from the front. DESIGN Retrospective, 4 cases of pellet injuries. METHODS Five orbits of 4 patients who sustained pellet injuries received from the front were reviewed retrospectively. The course of injury and results were assessed. Radiological examinations were reviewed. The patients were evaluated between December 1...

Journal: :journal of current ophthalmology 0
مهدی کرمی mehdi karami محسن جان قربانی mohsen janghorbani علیرضا دهقانی alireza dehghani مریم ریاحی نژاد maryam riahinejad

purpose : to evaluate orbital blood flow velocities and optic nerve diameter with doppler and gray-scale sonography in patients with acute unilateral optic neuritis (on) methods : orbital doppler and gray-scale sonography was performed in 46 eyes of 23 patients aged 19-47 with acute unilateral on. on was diagnosed by an ophthalmologist on the basis of clinical presentation, presence of decrease...

2013
R. Parab C. I. Fung Gerrit Van Der Merwe

Traumatic optic neuropathy is an uncommon, yet serious, result of facial trauma. The authors present a novel case of a 59-year-old gentleman who presented with an isolated blunt traumatic left optic nerve hematoma causing vision loss. There were no other injuries or fractures to report. This case highlights the importance of early recognition of this rare injury and reviews the current literatu...

Journal: :iranian journal of child neurology 0
z. razavi md,assistant professor, pediatric endocrinologist, hamedan university of medical sciences

objective the diagnosis of de morsier syndrome or septo-optic dysplasia is made on the basis of the diagnosis of optic nerve hypoplasia. septo-optic dysplasia is defined by a variable combination of dysgenesis of midline brain structures including optic nerve hypoplasia and hypothalamic-pituitary dysfunction often associated with a wide variety of brain malformations of cortical development. th...

صالحیان نیک , الهام , تفاخری, زهرا, شریفی رضوی , آتنا, فدایی, سحر , فروغی پور , محسن, مقدم احمدی, امیر, پور رشیدی, احمد,

Background and purpose: Optic neuritis is one of the common causes of unilateral or bilateral visual loss. The most common cause of this disorder is demyelinating disease of the central nervous system (CNS) and most of the patients with optic neuritis will present other signs of multiple sclerosis (MS). The diagnosis depends on the clinical findings, however, magnetic resonance imaging (MRI) is...

2017
Daniel Sun Sara Moore Tatjana C Jakobs

Reactive remodeling of optic nerve head astrocytes is consistently observed in glaucoma and other optic nerve injuries. However, it is unknown whether this reactivity is beneficial or harmful for visual function. In this study, we used the Cre recombinase (Cre)-loxP system under regulation of the mouse glial fibrillary acidic protein promoter to knock out the transcription factor signal transdu...

Journal: :Neuroscience letters 2006
Li Zhao Ningli Wang Libin Jiang Caixia Long Junfa Li

Studies have demonstrated that optic nerve transection results in apoptotic cell death of retinal ganglion cells (RGCs) and neurons within lateral geniculate nucleus (LGN). Heat shock protein (Hsp) 70 was reported to be involved in protecting cells from injury under various pathological conditions in vivo and in vitro. To determine the involvement of Hsp70 in protecting neurons within LGN again...

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