Results 111 to 120 of about 22,234 (267)

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

open access: yesActa 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

open access: yesActa 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   +4 more
wiley   +1 more source

Solar flare rates and probabilities based on the McIntosh classification: Impacts of GOES/XRS rescaling and revisited sunspot classifications

open access: yesJournal of Space Weather and Space Climate
In December 2019, the Space Weather Prediction Center (SWPC) started using the GOES1-16 satellite as its primary input for solar X-ray flux monitoring.
Janssens Jan   +3 more
doaj   +1 more source

Statistics of sunspot group clusters

open access: yesJournal of Space Weather and Space Climate, 2013
The Zubrzycki method is utilized to find all sunspot groups which are close to each other during each Carrington rotation. The sunspot group areas and their positions for the years 1874–2008 are used.
Getko Ryszarda
doaj   +1 more source

Sunspot Number Series Envelope and Phase [PDF]

open access: yesAustralian Journal of Physics, 1985
The sunspot number series R( t) from 1700 to date is found to be representable by R( t) = I Jf' {Re( E( t) exp[i {wo t + <1>( t) I]) + U( t) 1 I, where Wo is the angular frequency corresponding to a period of 22 years, E(t) is the instantaneous envelope amplitude, (t) is the instantaneous phase of a complex time-varying analytic function,
openaire   +1 more source

The oscillatory response of the electroretinogram and neuronal adaptation

open access: yesActa 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

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

open access: yesActa 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   +8 more
wiley   +1 more source

A Prediction of Solar Cycle Maxima Using Visibility Graphs

open access: yesThe Astrophysical Journal
We apply a complex network approach to analyze the time series of five solar parameters, and propose a strategy to predict the number of sunspots for the next solar maximum, and when this maximum will occur. The approach is based on the visibility graph (
Eduardo Flández, Víctor Muñoz
doaj   +1 more source

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

open access: yesActa 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   +3 more
wiley   +1 more source

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