Results 101 to 110 of about 9,553 (254)

Changes in choroidal and retinal thickness 6 months before and during 18 months of orthokeratology lens treatment in myopic children

Acta Ophthalmologica, EarlyView.
Abstract Purpose To investigate changes in choroidal and retinal thickness before and during myopia control treatment with orthokeratology lenses (OKL) in myopic children. Methods This was a sub‐study of CONTROL and CONTROL2 studies. The present study was a 2‐year, prospective, single‐group interventional study consisting of a 6‐month pre‐treatment ...
P. O. Hansen, F. Møller, T. M. Jakobsen
wiley   +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

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

Statistical study of the equatorial F2 layer critical frequency at Ouagadougou during solar cycles 20, 21 and 22, using Legrand and Simon’s classification of geomagnetic activity

Journal of Space Weather and Space Climate, 2012
This paper presents the statistical analysis of the diurnal variations of the F layer at the equatorial station of Ouagadougou (Lat: 12.4° N; Long: 358.5° E; dip: 5.9°) from 1966 to 1998 (=> ~11 680 days).
Amory-Mazaudier Christine, Ouattara Frédéric   +1 more
doaj   +1 more source

Long‐term follow‐up of chronic central serous chorioretinopathy patients receiving oral eplerenone and half‐dose photodynamic therapy in the SPECTRA trial: SPECTRA trial report No. 4

Acta Ophthalmologica, EarlyView.
Abstract Purpose Assessing the 24‐month treatment outcome of half‐dose photodynamic therapy (PDT) or oral eplerenone in chronic central serous chorioretinopathy (cCSC). Methods Multicentre randomized clinical trial included cCSC patients from the SPECTRA trial who were randomized to receive half‐dose PDT or oral eplerenone.
Helena M. A. Feenstra, Issam El Mansori, Thomas J. van Rijssen, Roula Tsonaka, Roselie M. H. Diederen, Carel B. Hoyng, Reinier O. Schlingemann, Camiel J. F. Boon, Elon H. C. van Dijk   +8 more
wiley   +1 more source

Sunspot number recalibration: The ~1840–1920 anomaly in the observer normalization factors of the group sunspot number

Journal of Space Weather and Space Climate, 2017
We analyze the normalization factors (k′-factors) used to scale secondary observers to the Royal Greenwich Observatory (RGO) reference series of the Hoyt & Schatten (1998a, 1998b) group sunspot number (GSN).
Cliver Edward W.
doaj   +1 more source

The impact of systemic long‐term medications for the development of age‐related macular degeneration

Acta Ophthalmologica, EarlyView.
Abstract Purpose Age‐related macular degeneration (AMD) is a leading cause of central vision loss in the elderly; however, the systemic factors that modulate its incidence and progression remain unclear. We sought to determine whether long‐term use of systemic medications, including diabetes and antithrombotic medications, corticosteroids and ...
Hanna Heloterä, Reijo Sund, Toni Rikkonen, Kai Kaarniranta   +3 more
wiley   +1 more source

A Bias-free Deep Learning Approach for Automated Sunspot Segmentation

The Astrophysical Journal
Solar activities significantly influence space weather and the Earth’s environment, necessitating accurate and efficient sunspot detection. This study explores deep learning methods to automate sunspot identification in solar satellite images, keeping ...
Jing Chen, Norbert G. Gyenge, Ye Jiang, Robertus Erdélyi, Jiajia Liu, Yimin Wang   +5 more
doaj   +1 more source

Ultrasound, PET/CT or temporal artery biopsy for giant cell arteritis? A prospective diagnostic accuracy study (the GAME‐study)

Acta Ophthalmologica, EarlyView.
Abstract Purpose To investigate the diagnostic performance of ultrasound, 2‐deoxy‐2‐[18F]fluoro‐D‐glucose positron emission tomography/computed tomography (2‐[18F]FDG PET/CT) and temporal artery biopsy (TAB) in giant cell arteritis (GCA). Methods This was a prospective single‐centre diagnostic accuracy study (ClinicalTrials.gov NCT05248906).
Michael S. Hansen, Lene Terslev, Uffe M. Døhn, Viktoria Fana, Jane M. Brittain, Anne K. Wiencke, Steffen Heegaard, Mads R. Jensen, Oliver N. Klefter, Yousif Subhi, Steffen Hamann   +10 more
wiley   +1 more source

Observed Joy’s Law of Bipolar Magnetic Region Tilts at Emergence Supports the Thin Flux Tube Model

The Astrophysical Journal Letters
Bipolar sunspots, or more generally, bipolar magnetic regions (BMRs), are the dynamic magnetic regions that appear on the solar surface and are central to solar activity. One striking feature of these regions is that they are often tilted with respect to
Anu Sreedevi, Bidya Binay Karak, Bibhuti Kumar Jha, Rambahadur Gupta, Dipankar Banerjee   +4 more
doaj   +1 more source