Results 41 to 50 of about 409,668 (187)

High sampling resolution optical coherence tomography reveals potential concurrent reductions in ganglion cell‐inner plexiform and inner nuclear layer thickness but not in outer retinal thickness in glaucoma

open access: yesOphthalmic and Physiological Optics, Volume 43, Issue 1, Page 46-63, January 2023., 2023
Abstract Purpose To analyse optical coherence tomography (OCT)‐derived inner nuclear layer (INL) and outer retinal complex (ORC) measurements relative to ganglion cell‐inner plexiform layer (GCIPL) measurements in glaucoma. Methods Glaucoma participants (n = 271) were categorised by 10‐2 visual field defect type.
Janelle Tong   +4 more
wiley   +1 more source

Relationships between target intraocular pressure and central corneal thickness in stabilized and non-stabilized glaucoma patients

open access: yesJournal of Ophthalmology, 2021
Background: Until now, no direct relationship has been established between the target pressure and particular corneal thickness for measurements with different types of tonometers.
Dmitriev S. K.   +3 more
doaj   +1 more source

Local measures of entanglement in black holes and CFTs [PDF]

open access: yesSciPost Phys. 12, 079 (2022), 2021
We study the structure and dynamics of entanglement in CFTs and black holes. We use a local entanglement measure, the entanglement contour, which is a spatial density function for von Neumann entropy with some additional properties. The entanglement contour can be calculated in many 1+1d condensed matter systems and simple models of black hole ...
arxiv   +1 more source

Correlation between central corneal thickness and intraocular pressure in various age groups [PDF]

open access: yesSrpski Arhiv za Celokupno Lekarstvo, 2010
Introduction The Pascal Dynamic Contour Tonometer (DCT) is an ophthalmic investigational device which directly calculates the dynamic pulsatile fluctuations in intraocular pressure (IOP) using a piezoelectric pressure sensor embedded in the devices tip ...
Marjanović Ivan   +4 more
doaj   +1 more source

Bifurcations of heteroclinic contours in two-parameter planar systems: Overview and explicit examples [PDF]

open access: yesInternational Journal of Bifurcation and Chaos, Volume 31, Issue 12 (30 September 2021), 2021
Smooth planar vector fields containing two hyperbolic saddles may possess contours formed by heteroclinic connections between these saddles. We present an overview of the bifurcations of these contours based on papers by J.W. Reyn and A.V. Dukov. Additionally, two new explicit polynomial systems containing such contours are derived, which are studied ...
arxiv   +1 more source

Intraocular Pressure Measurement after Penetrating Keratoplasty

open access: yesDiagnostics, 2022
Assessing the intraocular pressure is a difficult but crucial task in the follow-up of patients that have undergone penetrating keratoplasty. Early recognition of elevated intraocular pressure and/or glaucoma and establishment of the appropriate ...
Otilia-Maria Dumitrescu   +3 more
doaj   +1 more source

Dynamics of Droplet Generation from Corneal Tear Film during Non-contact Eye Procedure in the Context of COVID-19 [PDF]

open access: yes, 2020
Non-invasive medical diagnostics demonstrate a propensity for droplet generation and should be studied to devise risk mitigation strategies against the spread of the SARS-CoV-2 virus. We investigate the air-puff tonometry, which uses a short-timed air-puff to applanate the human eye in a bid to detect the early onset of glaucoma by measuring the ...
arxiv   +1 more source

Contour dynamics of two-dimensional dark solitons [PDF]

open access: yes, 2022
Equations for contour dynamics of dark solitons are obtained for the general form of the nonlinearity function. Their self-similar solution which describes the nonlinear stage of the bending instability of dark solitons is studied in detail.
arxiv   +1 more source

Future Research Perspective on the Interfacial Physics of Non-Invasive Glaucoma Testing in Pathogen Transmission from the Eyes [PDF]

open access: yesarXiv, 2023
Non-contact Tonometry (NCT) is a non-invasive ophthalmologic technique to measure intraocular pressure (IOP) using an air puff for routine glaucoma testing. Although IOP measurement using NCT has been perfected over many years, various phenomenological aspects of interfacial physics, fluid structure interaction, waves on corneal surface, and pathogen ...
arxiv  

Unsupervised Contour Tracking of Live Cells by Mechanical and Cycle Consistency Losses [PDF]

open access: yesarXiv, 2023
Analyzing the dynamic changes of cellular morphology is important for understanding the various functions and characteristics of live cells, including stem cells and metastatic cancer cells. To this end, we need to track all points on the highly deformable cellular contour in every frame of live cell video.
arxiv  

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