Results 21 to 30 of about 1,261,152 (360)

Spatially selective activation of the visual cortex via intraneural stimulation of the optic nerve

Nature Biomedical Engineering, 2019
Retinal prostheses can restore a functional form of vision in patients affected by dystrophies of the outer retinal layer. Beyond clinical utility, prostheses for the stimulation of the optic nerve, the visual thalamus or the visual cortex could also ...
Vivien Gaillet, A. Cutrone, F. Artoni, Paola Vagni, Ariastity Mega Pratiwi, Sandra Alejandra Romero, Dario Lipucci Di Paola, S. Micera, D. Ghezzi   +8 more
semanticscholar   +1 more source

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

South 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, William I.D. Rae, Yarish Brijmohan, Miranda Durand, Catherine Connolly, Andrew Michowicz, Ahmed Bhigjee   +6 more
doaj   +1 more source

Photopic negative response recorded with RETeval system in eyes with optic nerve disorders

Scientific Reports, 2022
Electroretinography (ERG) is used to evaluate the physiological status of the retina and optic nerve. The purpose of this study was to determine the usefulness of ERGs recorded with the RETeval system in diagnosing optic nerve diseases.
Tsutomu Yamashita, Kumiko Kato, Mineo Kondo, Atsushi Miki, Syunsuke Araki, Katsutoshi Goto, Yoshiaki Ieki, Junichi Kiryu   +7 more
doaj   +1 more source

Effects of glutamate receptor activation on NG2-glia in the rat optic nerve [PDF]

, 2009
NG2-glia are a substantial population of cells in the central nervous system (CNS) that can be identified by their specific expression of the NG2 chondroitin sulphate (CSPG).
Hubbard, Paul S., Hamilton, Nicola; id_orcid, Hamilton, N., Butt, Arthur, Hubbard, Paul, Butt, Arthur M., Hamilton, N, Hubbard, P., Butt, AM   +8 more
core   +1 more source

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

Interdisciplinary 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, Andrew J. Fabiano, Robert A. Fenstermaker   +2 more
doaj   +1 more source

Age effect on retina and optic disc normal values [PDF]

, 2005
Purpose: To investigate retinal thickness and optic disc parameters by the Retinal Thickness Analyzer (RTA) glaucoma program in older normal subjects and to determine any age effect.
Chryssafis, C., Hirneiß, Christoph, Neubauer, A. S., Tsinopoulos, I., Kampik, Anselm, Thiel, M.   +5 more
core   +1 more source

Perioptic Cerebrospinal Fluid Dynamics in Idiopathic Intracranial Hypertension

Frontiers 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, Margherita Montali, Margherita Montali, Joachim Pircher, Jatta Berberat, Luca Remonda, Hanspeter E. Killer   +6 more
doaj   +1 more source

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

Frontiers 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, Yang Li, Eric Singman, Timothy McCulley, Chengwei Wu, Nitin Daphalapurkar, Nitin Daphalapurkar   +6 more
doaj   +1 more source

Evidence for Cerebrospinal Fluid Entry Into the Optic Nerve via a Glymphatic Pathway.

Investigative Ophthalmology and Visual Science, 2017
Purpose The purpose of this study was to determine whether cerebrospinal fluid (CSF) enters the optic nerve via a glymphatic pathway and whether this entry is size-dependent.
Emily Mathieu, N. Gupta, Amir F. Ahari, Xun Zhou, Joseph Hanna, Y. Yücel   +5 more
semanticscholar   +1 more source

Assessment of stereoscopic optic disc images using an autostereoscopic screen - experimental study [PDF]

, 2008
BACKGROUND: Stereoscopic assessment of the optic disc morphology is an important part of the care of patients with glaucoma. The aim of this study was to assess stereoviewing of stereoscopic optic disc images using an example of the new technology of ...
Habib, M.S., Lowell, J.S., Habib, Maged, Nick S Holliman, Andrew Hunter, Hunter, Andrew, Andrew Hunter, A., James A Lowell, Holliman, Nick, David HW Steel, Daniella Vaideanu, Hildreth, A., Anthony Hildreth, Vaideanu, D., Holliman, N.S., Maged S Habib, Steel, D.H.W., Vaideanu, Daniella, Steel, David, Lowell, James, Hildreth, Anthony   +20 more
core   +1 more source