Results 51 to 60 of about 211,987 (270)
Optical frequency combs generated mechanically [PDF]
, 2016 It is shown that a highly equidistant optical frequency comb can be generated by the parametric excitation of an optical bottle microresonator with nanoscale effective radius variation by its natural mechanical vibrations.
arxiv +1 more source
Pediatric optic neuritis [PDF]
Case reports, 2019 Optic neuritis in the pediatric population greatly differs from its presentation in the adult population. Firstly, it is usually bilateral in children and mostly unilateral in adults. (1,2,3) Second, it is generally associated with inflammation of the optic disc in pediatrics (1,2,3), whereas the inflammation is often retrobulbar in adults. (2) Finally,
openaire +3 more sources
Clinical features of COVID-19-related optic neuritis: a retrospective study
Frontiers in NeurologyObjectiveThis retrospective study aimed to investigate the clinical features of optic neuritis associated with COVID-19 (COVID-19 ON), comparing them with neuromyelitis optica-associated optic neuritis (NMO-ON), myelin oligodendrocyte glycoprotein ...
Fang-Fang Zhao +15 more
doaj +1 more source
Visual outcome following optic neuritis: A 5‑year review [PDF]
, 2012 Background: Optic neuritis is a demyelinating inflammatory disease of the optic nerve that typically affects young adults especially females, and is usually associated with multiple sclerosis especially in Caucasians. The prognosis for visual recovery is
Pedro‑Egbe, CN
core +2 more sources
Controlling photonic structures using optical forces [PDF]
Nature 462, 633-636 (3 December 2009), 2009 The downscaling of optical systems to the micro and nano-scale results in very compliant systems with nanogram-scale masses, which renders them susceptible to optical forces. Here we show a specially designed resonant structure for enabling efficient static control of the optical response with relatively weak repulsive and attractive optical forces ...
arxiv +1 more source
Arbeiten zur Optischen Kohärenztomographie, Magnetresonanzspektroskopie und Ultrahochfeld-Magnetresonanztomographie [PDF]
, 2019 Abstrakt (Deutsch) Hintergrund: Die Multiple Sklerose ist eine der häufigsten neurologischen Erkrankungen, die zu Behinderung bereits im jungen Erwachsenenalter führen kann.
Pfüller, Caspar Friedrich
core +1 more source
CONTINUUM: Lifelong Learning in Neurology, 2019 ABSTRACTPURPOSE OF REVIEWThis article discusses the clinical presentation, evaluation, and management of the patient with optic neuritis. Initial emphasis is placed on clinical history, examination, diagnostic testing, and medical decision making, while subsequent focus is placed on examining specific inflammatory optic neuropathies.
openaire +3 more sources
Frontiers in Neurology, 2021 Purpose: We examined the macular microvascular changes of the macula in neuromyelitis optica spectrum disorder (NMOSD) patients and its association with their disability and other clinical variables.Methods: Thirty-four NMOSD (13 patients without optic ...
Ruili Wei +7 more
doaj +1 more source
Nonlinear adiabatic optical isolator [PDF]
, 2016 We theoretically propose a method for optical isolation based on adiabatic nonlinear sum frequency generation in a chirped quasi-phase-matching crystal with strong absorption at the generated sum frequency wave. The method does not suffer from limitations of dynamic reciprocity found in other nonlinear optical isolation methods, and can provide tunable
arxiv +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Background Myelin oligodendrocyte glycoprotein antibody‐associated disease (MOGAD) can radiographically mimic multiple sclerosis (MS) and neuromyelitis optica spectrum disorder (NMOSD). The disease hallmarks cortical lesion, central vein sign (CVS) and paramagnetic rim lesions identified in MS have not yet been comprehensively investigated in ...
Lei Su +19 more
wiley +1 more source