Results 21 to 30 of about 120,001 (353)
Minimizing activation of overlying axons with epiretinal stimulation: The role of fiber orientation and electrode configuration. [PDF]
PLoS ONE, 2018 Currently, a challenge in electrical stimulation of the retina with a visual prosthesis (bionic eye) is to excite only the cells lying directly under the electrode in the ganglion cell layer, while avoiding excitation of axon bundles that pass over the ...
Timothy B Esler +5 more
doaj +1 more source
Analysis of current density and related parameters in spinal cord stimulation [PDF]
, 1998 A volume conductor model of the spinal cord and surrounding anatomical structures is used to calculate current (and current density) charge per pulse, and maximum charge density per pulse at the contact surface of the electrode in the dorsal epidural ...
Boom, Herman B.K. +2 more
core +3 more sources
Simulation of activation and propagation delay during tripolar neural stimulation [PDF]
, 1993 Computer simulations were perfonned to investigate the influence of stimulus amplitude on cathodal activation delay, propagation delay and blocking during stimulation with a bipolar cuff electrode.
Goodall, Eleanor V. +3 more
core +2 more sources
Retinal nerve fiber layer thickness and retinal vessel calibers in children with thalassemia minor
SAGE Open Medicine, 2016 Objectives: Evaluation of the peripapillary retinal nerve fiber layer thickness, subfoveal choroidal thickness, and retinal vessel caliber measurements in children with thalassemia minor.
Semra Acer +6 more
doaj +1 more source
Acta Médica Portuguesa, 2016 Introduction: Optic disc hypoplasia is a common feature in fetal alcohol syndrome. Thus, we aimed to evaluate the optic disc morphology changes and the peripapillary retinal nerve fiber layer thickness in these patients.
Carlos Menezes +4 more
doaj +1 more source
Sanamed, 2018 Statement of Significance: The prospect of this study is that the macula thickness is reduced in amblyopic eyes and may be a potential diagnostic tool in the future screening of amblyopic eyes.
Ayyildiz Taha
doaj +1 more source
Delta Journal of Ophthalmology, 2015 Introduction Femtosecond laser flap creation exerts less intraocular pressure (IOP) fluctuation but requires more procedural time compared with microkeratome flap creation.
Asaad A Ghanem +3 more
doaj +1 more source
Quantitatively Measured Anatomic Location and Volume of Optic Disc Drusen: An Enhanced Depth Imaging Optical Coherence Tomography Study [PDF]
, 2017 Optic disc drusen (ODD) are found in up to 2.4% of the population and are known to cause visual field defects. The purpose of the current study was to investigate how quantitatively estimated volume and anatomic location of ODD influence optic nerve ...
Dahl, Vedrana Andersen +4 more
core +2 more sources
Diagnostic ability of retinal nerve fiber layer maps to detect localized retinal nerve fiber layer defects [PDF]
Eye, 2013 To evaluate and compare the diagnostic ability of spectral domain optical coherence tomography (SD-OCT) for detecting localized retinal nerve fiber layer (RNFL) defects in topographic RNFL maps and circumpapillary RNFL (cpRNFL) thickness measurements.Sixty-four eyes with localized RNFL defects in red-free RNFL photographs and 72 healthy eyes were ...
J W, Shin, K B, Uhm, W J, Lee, Y J, Kim
openaire +2 more sources
Therapeutic Advances in Ophthalmology, 2020 Purpose: To identify the peripapillary retinal nerve fiber layer, total macular, ganglion cell layer, and inner plexiform layer thicknesses in children with high hyperopia using spectral domain optical coherence tomography.
Funda Dikkaya, Sevil Karaman Erdur
doaj +1 more source