Results 11 to 20 of about 685,293 (263)

Optic nerve sheath meningocele

open access: yesInternational Medical Case Reports Journal, 2018
Musleh Algarni,1,2 Pejman J Maralani,3 Arun NE Sundaram1 1Department of Ophthalmology and Vision Sciences, Sunnybrook Health Sciences Center, University of Toronto, Toronto, ON, Canada; 2Department of Medicine, Al Thagher General Hospital, Jeddah, Saudi ...
Algarni M, Maralani PJ, Sundaram ANE
doaj   +1 more source

Optic nerve sheath diameter measurement using point-of-care ultrasound to assess intracranial pressure of adult patients with traumatic brain injury in resource-limited setting

open access: yesInterdisciplinary Neurosurgery, 2023
Background: Traumatic brain injury is a disease with high mortality with increased intracranial pressure included in the emergency department. Neuroimaging and intracranial pressure monitoring are limited in resource-limited settings.
Melaku Getachew   +13 more
doaj   +1 more source

Retrobulbar diameter of optic nerve in glaucoma [PDF]

open access: yesSrpski Arhiv za Celokupno Lekarstvo, 2009
Introduction. The ultrasound diagnostics of the optic nerve includes the analysis of the optic nerve disc (PNO) and measuring of its retrobulbar diameter.
Stefanović Ivan   +2 more
doaj   +1 more source

The impact of optic nerve movement on optic nerve magnetic resonance diffusion parameters

open access: yesSouth African Journal of Radiology, 2014
Background: Optic nerve diffusion imaging is a useful investigational tool of optic nerve microstructure, but is limited by eye-movement-induced optic nerve movement and artifacts from surrounding cerebrospinal fluid, fat, bone and air.
Anand Moodley   +6 more
doaj   +1 more source

Ischemic optic neuropathies: Current concepts

open access: yesAnnals of Indian Academy of Neurology, 2022
Ischemic optic neuropathy (ION) is the term ascribed to optic nerve disease that is the result of a transient or permanent interruption of the blood supply to any portion of the optic nerve. Anterior ischemic optic neuropathy (AION) refers to ischemia of
Ajay D Patil   +2 more
doaj   +1 more source

Assessment of Optic Nerve Changes in Patients Receiving Anti-Tuberculosis Drugs at Different Time Interval

open access: yesJournal of Bahria University Medical and Dental College, 2022
Objectives: To assess optic nerve changes in patients receiving anti-tuberculosis drugs and to assess optic nerve changes at different time interval of therapy.
Shakila Abbas   +5 more
doaj   +1 more source

Metastatic optic nerve sheath calcification with optic atrophy associated with untreated hyperparathyroidism

open access: yesInterdisciplinary Neurosurgery, 2020
Background: To date, the etiology of optic nerve sheath calcifications is unclear and visual loss secondary to optic nerve sheath calcifications has been reported infrequently.
Patrick K. Jowdy   +2 more
doaj   +1 more source

TGF-beta(2)- and H2O2-Induced Biological Changes in Optic Nerve Head Astrocytes Are Reduced by the Antioxidant Alpha-Lipoic Acid [PDF]

open access: yes, 2012
Background/Aims: The goal of the present study was to determine whether transforming growth factor-beta(2) (TGF-beta(2))- and oxidative stress-induced cellular changes in cultured human optic nerve head (ONH) astrocytes could be reduced by pretreatment ...
Yu, Alice L.   +2 more
core   +1 more source

Perioptic Cerebrospinal Fluid Dynamics in Idiopathic Intracranial Hypertension

open access: yesFrontiers in Neurology, 2018
Purpose: To examine the cerebrospinal fluid (CSF) dynamics along the entire optic nerve in patients with idiopathic intracranial hypertension (IIH) and papilledema by computed tomographic (CT) cisternography.Methods: Retrospective analysis of CT ...
Achmed Pircher   +6 more
doaj   +1 more source

The Biomechanics of Indirect Traumatic Optic Neuropathy Using a Computational Head Model With a Biofidelic Orbit

open access: yesFrontiers in Neurology, 2020
Indirect traumatic optic neuropathy (ITON) is an injury to the optic nerve due to head trauma and usually results in partial or complete loss of vision. In order to advance a mechanistic understanding of the injury to the optic nerve, we developed a head
Yang Li   +6 more
doaj   +1 more source

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