Results 81 to 90 of about 45,234 (229)

Ultrafast fMRI Detects Age‐Related Changes in Harmonics of Cardiac Pulsations in the Brain at 7 T

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Aging impacts pulsatility of blood vessels in the brain, reflecting vascular health. Resolving characteristics of cardiac pulsatility requires faster acquisitions than traditional fMRI. An ultrafast fMRI method was developed and applied to sample several harmonics of cardiac pulsations at 7 T.
Charles Marchini, Dema Abdelkarim, Yuhui Chai, Monica Fabiani, Gabriele Gratton, Bradley P. Sutton   +5 more
wiley   +1 more source

Retinal oxygen saturation and retinal vessel diameter in glaucoma patients before and after trabeculectomy

Acta Ophthalmologica, EarlyView.
Abstract Purpose To compare retinal vessel oxygen saturations and diameters before, 1 and 3 months after trabeculectomy. Methods Retinal oxygen saturations and vessel diameters were obtained using retinal oximetry. The effect of the postoperative intraocular pressure (IOP) decrease on the arteriovenous difference (AV‐difference) was evaluated ...
S. Kemp, A. Ahmadzadeh, B. Schmidt, O. N. Klefter, L. Kessel, D. Bach‐Holm   +5 more
wiley   +1 more source

Optical coherence tomography angiography measurements in each group with age.

, 2023
Optical coherence tomography angiography measurements in each group with age.
Jung-Yeul Kim (6439670), Yong-Jin Na (12769600), Min-Woo Lee (1829035), Jae-Yun Sung (17200158), Woo-Hyuk Lee (8496168), Hyung-Bin Lim (8496171)   +5 more
core   +1 more source

Optical coherence tomography angiography of the macula and optic nerve head: microvascular density and test-retest repeatability in normal subjects

BMC Ophthalmology, 2018
Background Despite the potential usefulness of optical coherence tomography angiography in retinal and optic disc conditions, the reliability of the imaging modality remains unclear.
Ching Wei Lim, Jun Cheng, Elton Lik Tong Tay, Hwei Yee Teo, Elizabeth Poh Ying Wong, Vernon Khet Yau Yong, Boon Ang Lim, Owen Kim Hee, Hon Tym Wong, Leonard Wei Leon Yip   +9 more
doaj   +1 more source

Prognostic factors of optical coherence tomography angiography in intermediate and advanced primary open‐angle glaucoma: A systematic review and meta‐analysis

Acta Ophthalmologica, EarlyView.
Abstract Conventional optical coherence tomography (OCT) has a floor effect in patients with severe visual field loss, such as seen in advanced primary open‐angle glaucoma (POAG). OCT angiography (OCTA) does not suffer from such a floor effect. However, which OCTA parameters are most useful for monitoring longitudinal progression is unclear.
Kamya Katarya, Victor A. de Vries, João Barbosa‐Breda, Luisa Sanchez Brea, Danilo Andrade De Jesus, Wishal D. Ramdas   +5 more
wiley   +1 more source

Multimodal imaging in posterior microphthalmos

Journal of Current Ophthalmology, 2019
Purpose: To evaluate the multimodal imaging including optical coherence tomography angiography (OCTA) findings in patients with posterior microphthalmos (PM).
Reza Karkhaneh, Ahmad Masoumi, Nazanin Ebrahimiadib, Hormoz Chams, Mojtaba Abrishami   +4 more
doaj   +1 more source

Risk factors for the development of subretinal fluid in the fellow eyes of patients with chronic central serous chorioretinopathy

Acta Ophthalmologica, EarlyView.
Abstract Purpose To assess the risk of subretinal fluid (SRF) development in the fellow eye of chronic central serous chorioretinopathy (cCSC) patients with unilateral SRF at baseline. Methods Medical records of 334 presumed cCSC patients were retrospectively reviewed.
Helena M. A. Feenstra, Tahir Cakar, Joost Brinks, Camiel J. F. Boon, Elon H. C. van Dijk   +4 more
wiley   +1 more source

Optical coherence tomography angiography in choroidal neovascular membrane

Delta Journal of Ophthalmology, 2018
Optical coherence tomography angiography is a new, noninvasive imaging technique that generates volumetric angiography images. It is quick and noninvasive and provides volumetric data, with the clinical capability of specifically localizing and ...
Moemen S El-Nawawy
doaj   +1 more source

Optical coherence tomography and optical coherence tomography angiography in glaucoma: diagnosis, progression, and correlation with functional tests

Therapeutic Advances in Ophthalmology, 2020
The present review will summarize the most updated findings with regards to optical coherence tomography and optical coherence tomography angiography in glaucoma, highlighting their clinical use for detection and monitoring of the disease, and their ...
Giacinto Triolo, Alessandro Rabiolo
doaj   +1 more source

The oscillatory response of the electroretinogram and neuronal adaptation

Acta Ophthalmologica, EarlyView.
Abstract After more than 50 years, there still remains a challenge and an interest to know more as well as extend and deepen our understanding of the small rapid wavelets, the oscillatory potentials (OPs), of the electroretinogram (ERG) and the neuronal adaptation of the retina.
Lillemor Wachtmeister, Anders Eklund
wiley   +1 more source