Results 31 to 40 of about 20,085 (220)

Corneal pulsation and biomechanics during induced ocular pulse. An ex-vivo pilot study.

open access: yesPLoS ONE, 2020
The purpose of this study was to ascertain the relationships between the amplitude of the corneal pulse (CP) signal and the parameters of corneal biomechanics during ex-vivo intraocular pressure (IOP) elevation experiments on porcine eyes with ...
Maja M Rogala   +4 more
doaj   +1 more source

A Cholinergic Synaptically Triggered Event Participates in the Generation of Persistent Activity Necessary for Eye Fixation [PDF]

open access: yes, 2004
An exciting topic regarding integrative properties of the nervous system is how transient motor commands or brief sensory stimuli are able to evoke persistent neuronal changes, mainly as a sustained, tonic action potential firing.
Alvarado, JC   +5 more
core   +5 more sources

Synaptic plasticity in medial vestibular nucleus neurons: comparison with computational requirements of VOR adaptation [PDF]

open access: yes, 2010
Background: Vestibulo-ocular reflex (VOR) gain adaptation, a longstanding experimental model of cerebellar learning, utilizes sites of plasticity in both cerebellar cortex and brainstem.
Fabien Tell   +4 more
core   +8 more sources

Relationship of Ocular Pulse Amplitude with Eye Structures and Systemic Blood Pressure

open access: yesTürk Oftalmoloji Dergisi, 2011
Pur po se: To assess the relationship of ocular pulse amplitude with eye structures and systemic blood pressure in healthy subjects. Ma te ri al and Met hod: Fifty-one healthy subjects were included in the study.
Ebru Nevin Çetin   +4 more
doaj   +1 more source

Trabecular Meshwork Motion Profile from Pulsatile Pressure Transients: A New Platform to Simulate Transitory Responses in Humans and Nonhuman Primates

open access: yesApplied Sciences, 2021
Trabecular meshwork (TM) motion abnormality is the leading cause of glaucoma. With technique limitations, how TM moves is still an enigma. This study describes a new laboratory platform to investigate TM motion responses to ocular transients in ex vivo ...
Chen Xin   +4 more
doaj   +1 more source

Ocular Pulse Amplitude in Behçet Disease

open access: yesOcular Immunology and Inflammation, 2011
Behcet disease (BD) is an idiopathic systemic inflammatory vasculitis characterized by recurrent oral aphthous ulcers, genital ulcers, ocular and skin findings, as well as vascular, neurological, a...
Çetin, Ebru Nevin   +4 more
openaire   +7 more sources

High-frequency ultrasound detects biomechanical weakening in keratoconus with lower stiffness at higher grade.

open access: yesPLoS ONE, 2022
In vivo biomechanical characterization of the cornea remains a challenge. We have developed a high-frequency ultrasound elastography method, the ocular pulse elastography (OPE), to measure corneal axial displacement (CAD) induced by the ocular pulse ...
Sunny Kwok   +4 more
doaj   +1 more source

Correlação entre a variação diurna da pressão intraocular, amplitude de pulso e propriedades estruturais corneanas [PDF]

open access: yes, 2009
PURPOSE: The purpose of this study was to evaluate the fluctuation of intraocular pressure measurements obtained by Goldmann applanation tonometry, dynamic contour tonometry, and corneal compensated non-contact tonometry during office hours in glaucoma ...
Doi, Larissa Morimoto   +3 more
core   +2 more sources

The Effect of Trabeculectomy on Ocular Pulse Amplitude

open access: yesInvestigative Opthalmology & Visual Science, 2010
To investigate whether trabeculectomy, besides its intraocular pressure (IOP)-lowering effect, has an effect on ocular pulse amplitude (OPA); and to determine whether OPA changes are influenced by IOP changes.Forty-eight patients with glaucoma (48 eyes) scheduled for unilateral first-time trabeculectomy were prospectively enrolled from October 2007 to ...
Breusegem, Christophe   +3 more
openaire   +3 more sources

Temporal structure in spiking patterns of ganglion cells defines perceptual thresholds in rodents with subretinal prosthesis. [PDF]

open access: yes, 2018
Subretinal prostheses are designed to restore sight in patients blinded by retinal degeneration using electrical stimulation of the inner retinal neurons.
Goetz, Georges   +8 more
core   +3 more sources

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