Results 131 to 140 of about 28,762 (292)

Systematic quantification of outer retinal morphology in three different SD‐OCT devices in geographic atrophy

Acta Ophthalmologica, EarlyView.
Abstract Purpose To define interdevice differences in quantitative outer retinal biomarkers across three spectral‐domain (SD) optical coherence tomography (OCT) devices in geographic atrophy (GA). Methods Patients with GA prospectively underwent imaging using Spectralis (Heidelberg Engineering), Cirrus (Zeiss) and Maestro (Topcon) OCT devices ...
Klaudia Birner, Sophie Frank‐Publig, Julia Mai, Anna Eidenberger, Johannes Schrittwieser, Gabriel Leitner‐Barrios, Magdalena Barasits, Markus Gumpinger, Gregor S. Reiter, Stefan Sacu, Ursula Schmidt‐Erfurth   +10 more
wiley   +1 more source

Are the sunspots really vanishing?. Anomalies in solar cycle 23 and implications for long-term models and proxies

, 2012
Context: The elapsed solar cycle (23) ended with an exceptionally long period of low activity and with unprecedented low levels for various series of solar irradiance and particle flux measurements.
F. Clette, L. Lefèvre
semanticscholar   +1 more source

Sunspots identification through mathematical morphology [PDF]

The implementation of automated methods for sunspot detection is essential to obtain better objectivity, efficiency, and accuracy in identifying sunspots and analysing their morphological properties.
Oliveira, O., Bourgeois, S., Gafeira, R., Barata, T., Erdélyi, R.   +4 more
core   +1 more source

Exploration of the relevancy of nutritional knowledge and self‐perceived nutrition competency of the UK Optometric Workforce

Acta Ophthalmologica, EarlyView.
Abstract Purpose This study investigated the self‐perceived competence, knowledge, confidence and attitudes of the UK optometric workforce with regard to nutritional advice for patients. Methods A validated questionnaire (NUTrition COMPetence) was used to survey the optometric workforce, which was adapted to UK optometric practice and nutritional ...
Duane Mellor, Nicola J. Milhench, Rebekka Heitmar   +2 more
wiley   +1 more source

Evaluation of spatial distribution of initial marking strategy among inexperienced graders in diabetic retinopathy: A retrospective cross‐sectional analysis

Acta Ophthalmologica, EarlyView.
Abstract Background Manual diabetic retinopathy (DR) grading may prefer certain regions and underestimate others. It is unclear if inexperienced graders' initial marking strategy reflects a specialist's marking pattern. Aims By the virtual ocular learning platform (VIOLA), we evaluated if initial DR‐lesion markings among inexperienced graders spatially
Simon Joel Ellerup Lowater, Andrea Blasi Núñez, Jakob Kristian Holm Andersen, Sebastian Dinesen, Thiusius Rajeeth Savarimuthu, Jakob Grauslund   +5 more
wiley   +1 more source

Concurrent macular neovascularization in shallow irregular retinal pigment epithelium elevation phenotypes in age‐related macular degeneration and chronic central serous chorioretinopathy: A systematic review and meta‐analysis

Acta Ophthalmologica, EarlyView.
Abstract This systematic review and meta‐analysis synthesized the reported frequency of concurrent macular neovascularization (MNV) among selected eyes with author‐defined shallow irregular retinal pigment epithelium (RPE) elevations in age‐related macular degeneration (AMD) and chronic central serous chorioretinopathy (CSC).
Mehmet Cem Sabaner, Irem Gunes, Rodrigo Anguita, Elon H. C. van Dijk, Lorenzo Ferro Desideri, Lasse Jørgensen Cehofski, Prithvi Ramtohul, Yousif Subhi   +7 more
wiley   +1 more source

Regional growth kinetics of geographic atrophy in age‐related macular degeneration with and without fovea‐sparing

Acta Ophthalmologica, EarlyView.
Abstract Purpose Fovea‐sparing geographic atrophy (GA) patients retain near‐normal central vision. To better understand GA progression in relation to the fovea, we performed a semi‐automated image analysis of regional atrophy growth in a long‐term GA natural‐history cohort. Methods Prospective‐observational, single‐centre‐study (02/2013–07/2025) at the
Daniel R. Muth, Abinaya P. Venkataraman, Alberto Dominguez‐Vicent, Goran Petrovski, Pete A. Williams, Laurence Quérat, Filippo Locri, Sandrine A. Zweifel, Anders Kvanta   +8 more
wiley   +1 more source

Optic nerve head blood flow autoregulation during isometric exercise in primary open‐angle glaucoma assessed by laser speckle flowgraphy

Acta Ophthalmologica, EarlyView.
Abstract Purpose To assess optic nerve head blood flow (ONHBF) autoregulation in patients with early‐ to moderate‐stage primary open‐angle glaucoma (POAG) and age‐ and sex‐matched healthy controls using laser speckle flowgraphy (LSFG) and isometric handgrip exercise.
Theresa Lindner, Viktoria Pai, Patrick Janku, Nikolaus Hommer, Anton Hommer, Liudmyla Petric, Ulrich Graf, Leopold Schmetterer, Gerhard Garhöfer, Doreen Schmidl   +9 more
wiley   +1 more source

Impact of retinal break location on surgical outcomes in primary uncomplicated rhegmatogenous retinal detachment: Superior versus inferior breaks

Acta Ophthalmologica, EarlyView.
Abstract Purpose To compare the anatomical and functional outcomes of pars plana vitrectomy (PPV) for primary uncomplicated rhegmatogenous retinal detachment (RRD) with superior versus inferior retinal breaks. Methods This retrospective study included 675 eyes of 675 patients, of which 476 had exclusively superior breaks and 199 had at least one ...
Ioanna Dimakopoulou, Michael Georgopoulos, Philipp Toubia Scholz, Jakob Kraiger, Johannes Iby, Sam Hedo, Stefan Sacu, Georgios Mylonas   +7 more
wiley   +1 more source

Sunspots and starspots

, 2008
A comprehensive account of sunspots and starspots for graduate students, astronomers, geophysicists, space physicists and experts in solar and stellar ...
Thomas, John H, Weiss, Nigel O, John H. Thomas, Nigel O. Weiss   +3 more
core   +1 more source